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href="https://ca.wikipedia.org/wiki/Semi_metalls" title="Semi metalls – Catalan" lang="ca" hreflang="ca" data-title="Semi metalls" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Semimetal" title="Semimetal – English" lang="en" hreflang="en" data-title="Semimetal" data-language-autonym="English" data-language-local-name="English" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Semim%C3%A9tal" title="Semimétal – French" lang="fr" hreflang="fr" data-title="Semimétal" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EB%B0%98%EA%B8%88%EC%86%8D" title="반금속 – Korean" lang="ko" hreflang="ko" data-title="반금속" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Semimetallo_(fisica)" title="Semimetallo (fisica) – Italian" lang="it" hreflang="it" data-title="Semimetallo (fisica)" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/F%C3%A9lf%C3%A9m_(szil%C3%A1rdtestfizika)" title="Félfém (szilárdtestfizika) – Hungarian" lang="hu" hreflang="hu" data-title="Félfém (szilárdtestfizika)" data-language-autonym="Magyar" data-language-local-name="Hungarian" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%85%E0%B5%BC%E0%B4%A6%E0%B5%8D%E0%B4%A7%E0%B4%B2%E0%B5%8B%E0%B4%B9%E0%B4%99%E0%B5%8D%E0%B4%99%E0%B5%BE" title="അർദ്ധലോഹങ്ങൾ – Malayalam" lang="ml" hreflang="ml" data-title="അർദ്ധലോഹങ്ങൾ" data-language-autonym="മലയാളം" data-language-local-name="Malayalam" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Halfmetaal" title="Halfmetaal – Dutch" lang="nl" hreflang="nl" data-title="Halfmetaal" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-ja badge-Q17437798 badge-goodarticle mw-list-item" title="good article badge"><a href="https://ja.wikipedia.org/wiki/%E5%8D%8A%E9%87%91%E5%B1%9E_(%E3%83%90%E3%83%B3%E3%83%89%E7%90%86%E8%AB%96)" title="半金属 (バンド理論) – Japanese" lang="ja" hreflang="ja" data-title="半金属 (バンド理論)" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%9F%D0%BE%D0%BB%D1%83%D0%BC%D0%B5%D1%82%D0%B0%D0%BB%D0%BB_(%D1%84%D0%B8%D0%B7%D0%B8%D0%BA%D0%B0_%D1%82%D0%B2%D1%91%D1%80%D0%B4%D0%BE%D0%B3%D0%BE_%D1%82%D0%B5%D0%BB%D0%B0)" title="Полуметалл (физика твёрдого тела) – Russian" lang="ru" hreflang="ru" data-title="Полуметалл (физика твёрдого тела)" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-stq mw-list-item"><a href="https://stq.wikipedia.org/wiki/Hoolichmetal" title="Hoolichmetal – Saterland Frisian" lang="stq" hreflang="stq" data-title="Hoolichmetal" data-language-autonym="Seeltersk" data-language-local-name="Saterland Frisian" 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Metalloids are elements that have the properties of both <a href="/wiki/Metal" title="Metal">metal</a> and non-metal <a href="/wiki/Elements" class="mw-redirect mw-disambig" title="Elements">elements</a>. It might be shiny, but brittle. It might be dull, but conduct electricity. </p><p>The most common semimetal is <a href="/wiki/Silicon" title="Silicon">silicon</a>. Silicon has electrical <a href="https://simple.wiktionary.org/wiki/conductivity" class="extiw" title="wikt:conductivity">conductivity</a> between metals and nonmetals. It is a <a href="/wiki/Semiconductor" title="Semiconductor">semiconductor</a>. </p> <table style="width: 80%;"> <tbody><tr align="center"> <td><a href="/wiki/Periodic_table_group" class="mw-redirect" title="Periodic table group"><b>Group</b></a> </td> <td><a href="/wiki/Alkali_metal" title="Alkali metal"><b>1</b></a></td> <td><a href="/wiki/Alkaline_earth" class="mw-redirect" title="Alkaline earth"><b>2</b></a> </td> <td style="vertical-align: top;"><br /> </td> <td><a href="/wiki/Group_3_element" title="Group 3 element"><b>3</b></a></td> <td><a href="/wiki/Group_4_element" title="Group 4 element"><b>4</b></a> </td> <td><a href="/wiki/Group_5_element" title="Group 5 element"><b>5</b></a> </td> <td><a href="/wiki/Group_6_element" title="Group 6 element"><b>6</b></a></td> <td><a href="/wiki/Group_7_element" title="Group 7 element"><b>7</b></a> </td> <td><a href="/wiki/Group_8_element" title="Group 8 element"><b>8</b></a> </td> <td><a href="/wiki/Group_9_element" title="Group 9 element"><b>9</b></a></td> <td><a href="/wiki/Group_10_element" title="Group 10 element"><b>10</b></a> </td> <td><a href="/wiki/Coinage_metal" class="mw-redirect" title="Coinage metal"><b>11</b></a> </td> <td><a href="/wiki/Group_12_element" title="Group 12 element"><b>12</b></a></td> <td><a href="/wiki/Boron_group" title="Boron group"><b>13</b></a> </td> <td><a href="/wiki/Carbon_group" class="mw-redirect" title="Carbon group"><b>14</b></a> </td> <td><a href="/wiki/Pnictogen" title="Pnictogen"><b>15</b></a></td> <td><a href="/wiki/Chalcogen" class="mw-redirect" title="Chalcogen"><b>16</b></a> </td> <td><a href="/wiki/Halogen" title="Halogen"><b>17</b></a></td> <td><a href="/wiki/Noble_gas" title="Noble gas"><b>18</b></a> </td></tr> <tr align="center"> <td><a href="/wiki/Periodic_table_period" class="mw-redirect" title="Periodic table period"><b>Period</b></a> </td> <td colspan="20"><br /> </td></tr> <tr align="center"> <td><a href="/wiki/Period_1_element" title="Period 1 element"><b>1</b></a> </td> <td bgcolor="#a0ffa0"><span style="color:green;">1</span><br /><a href="/wiki/Hydrogen" title="Hydrogen">H</a> </td> <td colspan="17"><br /> </td> <td bgcolor="#a0ffa0"><span style="color:green;">2</span><br /><a href="/wiki/Helium" title="Helium">He</a> </td></tr> <tr align="center"> <td><a href="/wiki/Period_2_element" title="Period 2 element"><b>2</b></a> </td> <td bgcolor="#cccccc">3<br /><a href="/wiki/Lithium" title="Lithium">Li</a> </td> <td bgcolor="#cccccc">4<br /><a href="/wiki/Beryllium" title="Beryllium">Be</a> </td> <td style="vertical-align: top;" colspan="11"><br /> </td> <td bgcolor="#cccc99">5<br /><a href="/wiki/Boron" title="Boron">B</a> </td> <td bgcolor="#a0ffa0">6<br /><a href="/wiki/Carbon" title="Carbon">C</a> </td> <td bgcolor="#a0ffa0"><span style="color:green;">7</span><br /><a href="/wiki/Nitrogen" title="Nitrogen">N</a> </td> <td bgcolor="#a0ffa0"><span style="color:green;">8</span><br /><a href="/wiki/Oxygen" title="Oxygen">O</a> </td> <td bgcolor="#a0ffa0"><span style="color:green;">9</span><br /><a href="/wiki/Fluorine" title="Fluorine">F</a> </td> <td bgcolor="#a0ffa0"><span style="color:green;">10</span><br /><a href="/wiki/Neon" title="Neon">Ne</a> </td></tr> <tr align="center"> <td><a href="/wiki/Period_3_element" title="Period 3 element"><b>3</b></a> </td> <td bgcolor="#cccccc">11<br /><a href="/wiki/Sodium" title="Sodium">Na</a> </td> <td bgcolor="#cccccc">12<br /><a href="/wiki/Magnesium" title="Magnesium">Mg</a> </td> <td style="vertical-align: top;" colspan="11"><br /> </td> <td bgcolor="#cccccc">13<br /><a href="/wiki/Aluminium" title="Aluminium">Al</a> </td> <td bgcolor="#cccc99">14<br /><a href="/wiki/Silicon" title="Silicon">Si</a> </td> <td bgcolor="#a0ffa0">15<br /><a href="/wiki/Phosphorus" title="Phosphorus">P</a> </td> <td bgcolor="#a0ffa0">16<br /><a href="/wiki/Sulfur" title="Sulfur">S</a> </td> <td bgcolor="#a0ffa0"><span style="color:green;">17</span><br /><a href="/wiki/Chlorine" title="Chlorine">Cl</a> </td> <td bgcolor="#a0ffa0"><span style="color:green;">18</span><br /><a href="/wiki/Argon" title="Argon">Ar</a> </td></tr> <tr align="center"> <td><a href="/wiki/Period_4_element" title="Period 4 element"><b>4</b></a> </td> <td bgcolor="#cccccc">19<br /><a href="/wiki/Potassium" title="Potassium">K</a> </td> <td bgcolor="#cccccc">20<br /><a href="/wiki/Calcium" title="Calcium">Ca</a> </td> <td style="vertical-align: top;"><br /> </td> <td bgcolor="#cccccc">21<br /><a href="/wiki/Scandium" title="Scandium">Sc</a> </td> <td bgcolor="#cccccc">22<br /><a href="/wiki/Titanium" title="Titanium">Ti</a> </td> <td bgcolor="#cccccc">23<br /><a href="/wiki/Vanadium" title="Vanadium">V</a> </td> <td bgcolor="#cccccc">24<br /><a href="/wiki/Chromium" title="Chromium">Cr</a> </td> <td bgcolor="#cccccc">25<br /><a href="/wiki/Manganese" title="Manganese">Mn</a> </td> <td bgcolor="#cccccc">26<br /><a href="/wiki/Iron" title="Iron">Fe</a> </td> <td bgcolor="#cccccc">27<br /><a href="/wiki/Cobalt" title="Cobalt">Co</a> </td> <td bgcolor="#cccccc">28<br /><a href="/wiki/Nickel" title="Nickel">Ni</a> </td> <td bgcolor="#cccccc">29<br /><a href="/wiki/Copper" title="Copper">Cu</a> </td> <td bgcolor="#cccccc">30<br /><a href="/wiki/Zinc" title="Zinc">Zn</a> </td> <td bgcolor="#cccccc">31<br /><a href="/wiki/Gallium" title="Gallium">Ga</a> </td> <td bgcolor="#cccc99">32<br /><a href="/wiki/Germanium" title="Germanium">Ge</a> </td> <td bgcolor="#cccc99">33<br /><a href="/wiki/Arsenic" title="Arsenic">As</a> </td> <td bgcolor="#a0ffa0">34<br /><a href="/wiki/Selenium" title="Selenium">Se</a> </td> <td bgcolor="#a0ffa0"><span style="color:blue;">35</span><br /><a href="/wiki/Bromine" title="Bromine">Br</a> </td> <td bgcolor="#a0ffa0"><span style="color:green;">36</span><br /><a href="/wiki/Krypton" title="Krypton">Kr</a> </td></tr> <tr align="center"> <td><a href="/wiki/Period_5_element" title="Period 5 element"><b>5</b></a> </td> <td bgcolor="#cccccc">37<br /><a href="/wiki/Rubidium" title="Rubidium">Rb</a> </td> <td bgcolor="#cccccc">38<br /><a href="/wiki/Strontium" title="Strontium">Sr</a> </td> <td style="vertical-align: top;"><br /> </td> <td bgcolor="#cccccc">39<br /><a href="/wiki/Yttrium" title="Yttrium">Y</a> </td> <td bgcolor="#cccccc">40<br /><a href="/wiki/Zirconium" title="Zirconium">Zr</a> </td> <td bgcolor="#cccccc">41<br /><a href="/wiki/Niobium" title="Niobium">Nb</a> </td> <td bgcolor="#cccccc">42<br /><a href="/wiki/Molybdenum" title="Molybdenum">Mo</a> </td> <td bgcolor="#cccccc"><span style="color:red;">43</span><br /><a href="/wiki/Technetium" title="Technetium">Tc</a> </td> <td bgcolor="#cccccc">44<br /><a href="/wiki/Ruthenium" title="Ruthenium">Ru</a> </td> <td bgcolor="#cccccc">45<br /><a href="/wiki/Rhodium" title="Rhodium">Rh</a> </td> <td bgcolor="#cccccc">46<br /><a href="/wiki/Palladium" title="Palladium">Pd</a> </td> <td bgcolor="#cccccc">47<br /><a href="/wiki/Silver" title="Silver">Ag</a> </td> <td bgcolor="#cccccc">48<br /><a href="/wiki/Cadmium" title="Cadmium">Cd</a> </td> <td bgcolor="#cccccc">49<br /><a href="/wiki/Indium" title="Indium">In</a> </td> <td bgcolor="#cccccc">50<br /><a href="/wiki/Tin" title="Tin">Sn</a> </td> <td bgcolor="#cccc99">51<br /><a href="/wiki/Antimony" title="Antimony">Sb</a> </td> <td bgcolor="#cccc99">52<br /><a href="/wiki/Tellurium" title="Tellurium">Te</a> </td> <td bgcolor="#a0ffa0">53<br /><a href="/wiki/Iodine" title="Iodine">I</a> </td> <td bgcolor="#a0ffa0"><span style="color:green;">54</span><br /><a href="/wiki/Xenon" title="Xenon">Xe</a> </td></tr> <tr align="center"> <td><a href="/wiki/Period_6_element" title="Period 6 element"><b>6</b></a> </td> <td bgcolor="#cccccc">55<br /><a href="/wiki/Caesium" title="Caesium">Cs</a> </td> <td bgcolor="#cccccc">56<br /><a href="/wiki/Barium" title="Barium">Ba</a> </td> <td style="vertical-align: middle; background-color: rgb(204, 204, 204);">*<br /> </td> <td bgcolor="#cccccc">71<br /><a href="/wiki/Lutetium" title="Lutetium">Lu</a> </td> <td bgcolor="#cccccc">72<br /><a href="/wiki/Hafnium" title="Hafnium">Hf</a> </td> <td bgcolor="#cccccc">73<br /><a href="/wiki/Tantalum" title="Tantalum">Ta</a> </td> <td bgcolor="#cccccc">74<br /><a href="/wiki/Tungsten" title="Tungsten">W</a> </td> <td bgcolor="#cccccc">75<br /><a href="/wiki/Rhenium" title="Rhenium">Re</a> </td> <td bgcolor="#cccccc">76<br /><a href="/wiki/Osmium" title="Osmium">Os</a> </td> <td bgcolor="#cccccc">77<br /><a href="/wiki/Iridium" title="Iridium">Ir</a> </td> <td bgcolor="#cccccc">78<br /><a href="/wiki/Platinum" title="Platinum">Pt</a> </td> <td bgcolor="#cccccc">79<br /><a href="/wiki/Gold" title="Gold">Au</a> </td> <td bgcolor="#cccccc"><span style="color:blue;">80</span><br /><a href="/wiki/Mercury_(element)" title="Mercury (element)">Hg</a> </td> <td bgcolor="#cccccc">81<br /><a href="/wiki/Thallium" title="Thallium">Tl</a> </td> <td bgcolor="#cccccc">82<br /><a href="/wiki/Lead" title="Lead">Pb</a> </td> <td bgcolor="#cccccc">83<br /><a href="/wiki/Bismuth" title="Bismuth">Bi</a> </td> <td bgcolor="#cccccc">84<br /><a href="/wiki/Polonium" title="Polonium">Po</a> </td> <td bgcolor="#cccc99">85<br /><a href="/wiki/Astatine" title="Astatine">At</a> </td> <td bgcolor="#a0ffa0"><span style="color:green;">86</span><br /><a href="/wiki/Radon" title="Radon">Rn</a> </td></tr> <tr align="center"> <td><a href="/wiki/Period_7_element" title="Period 7 element"><b>7</b></a> </td> <td bgcolor="#cccccc">87<br /> <a href="/wiki/Francium" title="Francium">Fr</a>  </td> <td bgcolor="#cccccc">88<br /><a href="/wiki/Radium" title="Radium">Ra</a> </td> <td style="vertical-align: middle; background-color: rgb(204, 204, 204);">*<br />*<br /> </td> <td bgcolor="#cccccc"><span style="color:red;">103</span><br /><a href="/wiki/Lawrencium" title="Lawrencium">Lr</a> </td> <td bgcolor="#cccccc"><span style="color:red;">104</span><br /><a href="/wiki/Rutherfordium" title="Rutherfordium">Rf</a> </td> <td bgcolor="#cccccc"><span style="color:red;">105</span><br /><a href="/wiki/Dubnium" title="Dubnium">Db</a> </td> <td bgcolor="#cccccc"><span style="color:red;">106</span><br /><a href="/wiki/Seaborgium" title="Seaborgium">Sg</a> </td> <td bgcolor="#cccccc"><span style="color:red;">107</span><br /><a href="/wiki/Bohrium" title="Bohrium">Bh</a> </td> <td bgcolor="#cccccc"><span style="color:red;">108</span><br /><a href="/wiki/Hassium" title="Hassium">Hs</a> </td> <td bgcolor="#cccccc"><span style="color:red;">109</span><br /><a href="/wiki/Meitnerium" title="Meitnerium">Mt</a> </td> <td bgcolor="#cccccc"><span style="color:red;">110</span><br /><a href="/wiki/Darmstadtium" title="Darmstadtium">Ds</a> </td> <td bgcolor="#cccccc"><span style="color:red;">111</span><br />Rg </td> <td bgcolor="#cccccc"><span style="color:red;">112</span><br />Cn </td> <td bgcolor="#cccccc"><span style="color:red;">113<br /></span>Nh </td> <td bgcolor="#cccccc"><span style="color:red;">114</span><br /><a href="/wiki/Flerovium" title="Flerovium">Fl</a> </td> <td bgcolor="#cccccc"><span style="color:red;">115<br /></span><a href="/wiki/Moscovium" title="Moscovium">Mc</a> </td> <td bgcolor="#cccccc"><span style="color:red;">116<br /></span><a href="/wiki/Livermorium" title="Livermorium">Lv</a> </td> <td bgcolor="#cccccc"><span style="color:red;">117<br /></span><a href="/wiki/Tennessine" title="Tennessine">Ts</a> </td> <td bgcolor="#e6f7e5"><span style="color:#cccccc;">118<br /></span><a href="/wiki/Oganesson" title="Oganesson">Og</a> </td></tr> <tr align="center"> <td colspan="21"><br /> </td></tr> <tr align="center"> <td colspan="4" align="right">* <b><a href="/wiki/Lanthanide" title="Lanthanide">Lanthanides</a></b> </td> <td bgcolor="#cccccc">57<br /><a href="/wiki/Lanthanum" title="Lanthanum">La</a> </td> <td bgcolor="#cccccc">58<br /><a href="/wiki/Cerium" title="Cerium">Ce</a> </td> <td bgcolor="#cccccc">59<br /><a href="/wiki/Praseodymium" title="Praseodymium">Pr</a> </td> <td bgcolor="#cccccc">60<br /><a href="/wiki/Neodymium" title="Neodymium">Nd</a> </td> <td bgcolor="#cccccc"><span style="color:red;">61</span><br /><a href="/wiki/Promethium" title="Promethium">Pm</a> </td> <td bgcolor="#cccccc">62<br /><a href="/wiki/Samarium" title="Samarium">Sm</a> </td> <td bgcolor="#cccccc">63<br /><a href="/wiki/Europium" title="Europium">Eu</a> </td> <td bgcolor="#cccccc">64<br /><a href="/wiki/Gadolinium" title="Gadolinium">Gd</a> </td> <td bgcolor="#cccccc">65<br /><a href="/wiki/Terbium" title="Terbium">Tb</a> </td> <td bgcolor="#cccccc">66<br /><a href="/wiki/Dysprosium" title="Dysprosium">Dy</a> </td> <td bgcolor="#cccccc">67<br /><a href="/wiki/Holmium" title="Holmium">Ho</a> </td> <td bgcolor="#cccccc">68<br /><a href="/wiki/Erbium" title="Erbium">Er</a> </td> <td bgcolor="#cccccc">69<br /><a href="/wiki/Thulium" title="Thulium">Tm</a> </td> <td bgcolor="#cccccc">70<br /><a href="/wiki/Ytterbium" title="Ytterbium">Yb</a> </td></tr> <tr align="center"> <td colspan="4" align="right">** <b><a href="/wiki/Actinide" title="Actinide">Actinides</a></b> </td> <td bgcolor="#cccccc">89<br /><a href="/wiki/Actinium" title="Actinium">Ac</a> </td> <td bgcolor="#cccccc">90<br /><a href="/wiki/Thorium" title="Thorium">Th</a> </td> <td bgcolor="#cccccc">91<br /><a href="/wiki/Protactinium" title="Protactinium">Pa</a> </td> <td bgcolor="#cccccc">92<br /><a href="/wiki/Uranium" title="Uranium">U</a> </td> <td bgcolor="#cccccc"><span style="color:red;">93</span><br /><a href="/wiki/Neptunium" title="Neptunium">Np</a> </td> <td bgcolor="#cccccc"><span style="color:red;">94</span><br /><a href="/wiki/Plutonium" title="Plutonium">Pu</a> </td> <td bgcolor="#cccccc"><span style="color:red;">95</span><br /><a href="/wiki/Americium" title="Americium">Am</a> </td> <td bgcolor="#cccccc"><span style="color:red;">96</span><br /><a href="/wiki/Curium" title="Curium">Cm</a> </td> <td bgcolor="#cccccc"><span style="color:red;">97</span><br /><a href="/wiki/Berkelium" title="Berkelium">Bk</a> </td> <td bgcolor="#cccccc"><span style="color:red;">98</span><br /><a href="/wiki/Californium" title="Californium">Cf</a> </td> <td bgcolor="#cccccc"><span style="color:red;">99</span><br /><a href="/wiki/Einsteinium" title="Einsteinium">Es</a> </td> <td bgcolor="#cccccc"><span style="color:red;">100</span><br /><a href="/wiki/Fermium" title="Fermium">Fm</a> </td> <td bgcolor="#cccccc"><span style="color:red;">101</span><br /><a href="/wiki/Mendelevium" title="Mendelevium">Md</a> </td> <td bgcolor="#cccccc"><span style="color:red;">102</span><br /><a href="/wiki/Nobelium" title="Nobelium">No</a> </td></tr></tbody></table> <table align="center"> <caption>Key </caption> <tbody><tr> <td bgcolor="#cccccc"><a href="/wiki/Metal" title="Metal">Metals</a></td> <td bgcolor="#cccc99">Metalloids </td> <td bgcolor="#a0ffa0"><a href="/wiki/Nonmetal" title="Nonmetal">Nonmetals</a> </td></tr></tbody></table> <p><br /> An approximate way to classify metalloids is to look at the <a href="/wiki/Periodic_Table" class="mw-redirect" title="Periodic Table">Periodic Table</a> of elements. See the double diagonal line: top left <a href="/wiki/Boron" title="Boron">Boron</a> and Aluminium, bottom right <a href="/wiki/Polonium" title="Polonium">Polonium</a> and <a href="/wiki/Astatine" title="Astatine">Astatine</a>. Those diagonals are the metalloids. Some metalloids are not semimetals, and some semimetals are not metalloids. </p> <div class="mw-heading mw-heading2"><h2 id="Gallery">Gallery</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Metalloid&veaction=edit&section=1" title="Change section: Gallery" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Metalloid&action=edit&section=1" title="Edit section's source code: Gallery"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul class="gallery mw-gallery-traditional"> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:Antimony-119743.jpg" class="mw-file-description" title="Antimony, a semimetal, can be found naturally in the earth."><img alt="Antimony, a semimetal, can be found naturally in the earth." src="//upload.wikimedia.org/wikipedia/commons/thumb/4/47/Antimony-119743.jpg/120px-Antimony-119743.jpg" decoding="async" width="120" height="72" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/47/Antimony-119743.jpg/180px-Antimony-119743.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/47/Antimony-119743.jpg/240px-Antimony-119743.jpg 2x" data-file-width="957" data-file-height="576" /></a></span></div> <div class="gallerytext"><a href="/wiki/Antimony" title="Antimony">Antimony</a>, a semimetal, can be found naturally in the earth.</div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:Arsenic.jpg" class="mw-file-description" title="Arsenic is another semimetal that is very toxic."><img alt="Arsenic is another semimetal that is very toxic." src="//upload.wikimedia.org/wikipedia/commons/thumb/2/2f/Arsenic.jpg/95px-Arsenic.jpg" decoding="async" width="95" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/2f/Arsenic.jpg/142px-Arsenic.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/2f/Arsenic.jpg/190px-Arsenic.jpg 2x" data-file-width="1283" data-file-height="1622" /></a></span></div> <div class="gallerytext"><a href="/wiki/Arsenic" title="Arsenic">Arsenic</a> is another semimetal that is very toxic.</div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:Tellurium_bottle.jpg" class="mw-file-description" title="Tellurium in a bottle. Tellurium sometimes is found naturally."><img alt="Tellurium in a bottle. Tellurium sometimes is found naturally." src="//upload.wikimedia.org/wikipedia/commons/thumb/1/18/Tellurium_bottle.jpg/90px-Tellurium_bottle.jpg" decoding="async" width="90" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/18/Tellurium_bottle.jpg/135px-Tellurium_bottle.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/18/Tellurium_bottle.jpg/180px-Tellurium_bottle.jpg 2x" data-file-width="1704" data-file-height="2272" /></a></span></div> <div class="gallerytext"><a href="/wiki/Tellurium" title="Tellurium">Tellurium</a> in a bottle. Tellurium sometimes is found naturally.</div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:Germanium%27.jpg" class="mw-file-description" title="Germanium in a tube. Germanium can be used to make semiconductors. Silicon is used more."><img alt="Germanium in a tube. Germanium can be used to make semiconductors. Silicon is used more." src="//upload.wikimedia.org/wikipedia/commons/thumb/1/1b/Germanium%27.jpg/74px-Germanium%27.jpg" decoding="async" width="74" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/1b/Germanium%27.jpg/111px-Germanium%27.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/1b/Germanium%27.jpg/148px-Germanium%27.jpg 2x" data-file-width="679" data-file-height="1100" /></a></span></div> <div class="gallerytext"><a href="/wiki/Germanium" title="Germanium">Germanium</a> in a tube. Germanium can be used to make semiconductors. Silicon is used more.</div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:Silicon.jpg" class="mw-file-description" title="Silicon crystal. Silicon is used to make semiconductors."><img alt="Silicon crystal. Silicon is used to make semiconductors." src="//upload.wikimedia.org/wikipedia/commons/thumb/2/2c/Silicon.jpg/120px-Silicon.jpg" decoding="async" width="120" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/2c/Silicon.jpg/180px-Silicon.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/2c/Silicon.jpg/240px-Silicon.jpg 2x" data-file-width="948" data-file-height="948" /></a></span></div> <div class="gallerytext"><a href="/wiki/Silicon" title="Silicon">Silicon</a> crystal. Silicon is used to make semiconductors.</div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:Boron%27.jpg" class="mw-file-description" title="Boron in a tube. Boron is very hard."><img alt="Boron in a tube. Boron is very hard." src="//upload.wikimedia.org/wikipedia/commons/thumb/3/3f/Boron%27.jpg/85px-Boron%27.jpg" decoding="async" width="85" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/3f/Boron%27.jpg/127px-Boron%27.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/3f/Boron%27.jpg/170px-Boron%27.jpg 2x" data-file-width="692" data-file-height="978" /></a></span></div> <div class="gallerytext"><a href="/wiki/Boron" title="Boron">Boron</a> in a tube. Boron is very hard.</div> </li> </ul> <table class="navbox collapsible uncollapsed"> <tbody><tr> <th colspan="32"><style data-mw-deduplicate="TemplateStyles:r9122447">.mw-parser-output .navbar{display:inline;font-size:88%;font-weight:normal}.mw-parser-output .navbar-collapse{float:left;text-align:left}.mw-parser-output .navbar-boxtext{word-spacing:0}.mw-parser-output .navbar ul{display:inline-block;white-space:nowrap;line-height:inherit}.mw-parser-output .navbar-brackets::before{margin-right:-0.125em;content:"[ "}.mw-parser-output .navbar-brackets::after{margin-left:-0.125em;content:" ]"}.mw-parser-output .navbar li{word-spacing:-0.125em}.mw-parser-output .navbar a>span,.mw-parser-output .navbar a>abbr{text-decoration:inherit}.mw-parser-output .navbar-mini abbr{font-variant:small-caps;border-bottom:none;text-decoration:none;cursor:inherit}.mw-parser-output .navbar-ct-full{font-size:114%;margin:0 7em}.mw-parser-output .navbar-ct-mini{font-size:114%;margin:0 4em}</style><div class="navbar plainlinks hlist navbar-collapse navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Periodic_Table" title="Template:Periodic Table"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Periodic_Table" title="Template talk:Periodic Table"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a class="external text" href="https://simple.wikipedia.org/w/index.php?title=Template:Periodic_Table&action=edit"><abbr title="Edit this template">e</abbr></a></li></ul></div><div class="navbar-ct-mini"><a href="/wiki/Periodic_table" title="Periodic table">Periodic table</a></div> </th></tr> <tr> <td width="3.125%" style="background-color:#a0ffa0"><a href="/wiki/Hydrogen" title="Hydrogen">H</a> </td> <td width="3.125%" colspan="30">  </td> <td width="3.125%" style="background-color:#c0ffff"><a href="/wiki/Helium" title="Helium">He</a> </td></tr> <tr> <td style="background-color:#ff6666"><a href="/wiki/Lithium" title="Lithium">Li</a> </td> <td style="background-color:#ffdead"><a href="/wiki/Beryllium" title="Beryllium">Be</a> </td> <td colspan="24">  </td> <td style="background-color:#cccc99"><a href="/wiki/Boron" title="Boron">B</a> </td> <td style="background-color:#a0ffa0"><a href="/wiki/Carbon" title="Carbon">C</a> </td> <td style="background-color:#a0ffa0"><a href="/wiki/Nitrogen" title="Nitrogen">N</a> </td> <td style="background-color:#a0ffa0"><a href="/wiki/Oxygen" title="Oxygen">O</a> </td> <td style="background-color:#ffff99"><a href="/wiki/Fluorine" title="Fluorine">F</a> </td> <td style="background-color:#c0ffff"><a href="/wiki/Neon" title="Neon">Ne</a> </td></tr> <tr> <td style="background-color:#ff6666"><a href="/wiki/Sodium" title="Sodium">Na</a> </td> <td style="background-color:#ffdead"><a href="/wiki/Magnesium" title="Magnesium">Mg</a> </td> <td colspan="24">  </td> <td style="background-color:#cccccc"><a href="/wiki/Aluminium" title="Aluminium">Al</a> </td> <td style="background-color:#cccc99"><a href="/wiki/Silicon" title="Silicon">Si</a> </td> <td style="background-color:#a0ffa0"><a href="/wiki/Phosphorus" title="Phosphorus">P</a> </td> <td style="background-color:#a0ffa0"><a href="/wiki/Sulfur" title="Sulfur">S</a> </td> <td style="background-color:#ffff99"><a href="/wiki/Chlorine" title="Chlorine">Cl</a> </td> <td style="background-color:#c0ffff"><a href="/wiki/Argon" title="Argon">Ar</a> </td></tr> <tr> <td style="background-color:#ff6666"><a href="/wiki/Potassium" title="Potassium">K</a> </td> <td style="background-color:#ffdead"><a href="/wiki/Calcium" title="Calcium">Ca</a> </td> <td colspan="14">  </td> <td style="background-color:#ffc0c0"><a href="/wiki/Scandium" title="Scandium">Sc</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Titanium" title="Titanium">Ti</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Vanadium" title="Vanadium">V</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Chromium" title="Chromium">Cr</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Manganese" title="Manganese">Mn</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Iron" title="Iron">Fe</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Cobalt" title="Cobalt">Co</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Nickel" title="Nickel">Ni</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Copper" title="Copper">Cu</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Zinc" title="Zinc">Zn</a> </td> <td style="background-color:#cccccc"><a href="/wiki/Gallium" title="Gallium">Ga</a> </td> <td style="background-color:#cccc99"><a href="/wiki/Germanium" title="Germanium">Ge</a> </td> <td style="background-color:#cccc99"><a href="/wiki/Arsenic" title="Arsenic">As</a> </td> <td style="background-color:#a0ffa0"><a href="/wiki/Selenium" title="Selenium">Se</a> </td> <td style="background-color:#ffff99"><a href="/wiki/Bromine" title="Bromine">Br</a> </td> <td style="background-color:#c0ffff"><a href="/wiki/Krypton" title="Krypton">Kr</a> </td></tr> <tr> <td style="background-color:#ff6666"><a href="/wiki/Rubidium" title="Rubidium">Rb</a> </td> <td style="background-color:#ffdead"><a href="/wiki/Strontium" title="Strontium">Sr</a> </td> <td colspan="14">  </td> <td style="background-color:#ffc0c0"><a href="/wiki/Yttrium" title="Yttrium">Y</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Zirconium" title="Zirconium">Zr</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Niobium" title="Niobium">Nb</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Molybdenum" title="Molybdenum">Mo</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Technetium" title="Technetium">Tc</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Ruthenium" title="Ruthenium">Ru</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Rhodium" title="Rhodium">Rh</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Palladium" title="Palladium">Pd</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Silver" title="Silver">Ag</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Cadmium" title="Cadmium">Cd</a> </td> <td style="background-color:#cccccc"><a href="/wiki/Indium" title="Indium">In</a> </td> <td style="background-color:#cccccc"><a href="/wiki/Tin" title="Tin">Sn</a> </td> <td style="background-color:#cccc99"><a href="/wiki/Antimony" title="Antimony">Sb</a> </td> <td style="background-color:#cccc99"><a href="/wiki/Tellurium" title="Tellurium">Te</a> </td> <td style="background-color:#ffff99"><a href="/wiki/Iodine" title="Iodine">I</a> </td> <td style="background-color:#c0ffff"><a href="/wiki/Xenon" title="Xenon">Xe</a> </td></tr> <tr> <td width="3.125%" style="background-color:#ff6666"><a href="/wiki/Caesium" title="Caesium">Cs</a> </td> <td width="3.125%" style="background-color:#ffdead"><a href="/wiki/Barium" title="Barium">Ba</a> </td> <td width="3.125%" style="background-color:#ffbfff"><a href="/wiki/Lanthanum" title="Lanthanum">La</a> </td> <td width="3.125%" style="background-color:#ffbfff"><a href="/wiki/Cerium" title="Cerium">Ce</a> </td> <td width="3.125%" style="background-color:#ffbfff"><a href="/wiki/Praseodymium" title="Praseodymium">Pr</a> </td> <td width="3.125%" style="background-color:#ffbfff"><a href="/wiki/Neodymium" title="Neodymium">Nd</a> </td> <td width="3.125%" style="background-color:#ffbfff"><a href="/wiki/Promethium" title="Promethium">Pm</a> </td> <td width="3.125%" style="background-color:#ffbfff"><a href="/wiki/Samarium" title="Samarium">Sm</a> </td> <td width="3.125%" style="background-color:#ffbfff"><a href="/wiki/Europium" title="Europium">Eu</a> </td> <td width="3.125%" style="background-color:#ffbfff"><a href="/wiki/Gadolinium" title="Gadolinium">Gd</a> </td> <td width="3.125%" style="background-color:#ffbfff"><a href="/wiki/Terbium" title="Terbium">Tb</a> </td> <td width="3.125%" style="background-color:#ffbfff"><a href="/wiki/Dysprosium" title="Dysprosium">Dy</a> </td> <td width="3.125%" style="background-color:#ffbfff"><a href="/wiki/Holmium" title="Holmium">Ho</a> </td> <td width="3.125%" style="background-color:#ffbfff"><a href="/wiki/Erbium" title="Erbium">Er</a> </td> <td width="3.125%" style="background-color:#ffbfff"><a href="/wiki/Thulium" title="Thulium">Tm</a> </td> <td width="3.125%" style="background-color:#ffbfff"><a href="/wiki/Ytterbium" title="Ytterbium">Yb</a> </td> <td width="3.125%" style="background-color:#ffbfff"><a href="/wiki/Lutetium" title="Lutetium">Lu</a> </td> <td width="3.125%" style="background-color:#ffc0c0"><a href="/wiki/Hafnium" title="Hafnium">Hf</a> </td> <td width="3.125%" style="background-color:#ffc0c0"><a href="/wiki/Tantalum" title="Tantalum">Ta</a> </td> <td width="3.125%" style="background-color:#ffc0c0"><a href="/wiki/Tungsten" title="Tungsten">W</a> </td> <td width="3.125%" style="background-color:#ffc0c0"><a href="/wiki/Rhenium" title="Rhenium">Re</a> </td> <td width="3.125%" style="background-color:#ffc0c0"><a href="/wiki/Osmium" title="Osmium">Os</a> </td> <td width="3.125%" style="background-color:#ffc0c0"><a href="/wiki/Iridium" title="Iridium">Ir</a> </td> <td width="3.125%" style="background-color:#ffc0c0"><a href="/wiki/Platinum" title="Platinum">Pt</a> </td> <td width="3.125%" style="background-color:#ffc0c0"><a href="/wiki/Gold" title="Gold">Au</a> </td> <td width="3.125%" style="background-color:#ffc0c0"><a href="/wiki/Mercury_(element)" title="Mercury (element)">Hg</a> </td> <td width="3.125%" style="background-color:#cccccc"><a href="/wiki/Thallium" title="Thallium">Tl</a> </td> <td width="3.125%" style="background-color:#cccccc"><a href="/wiki/Lead" title="Lead">Pb</a> </td> <td width="3.125%" style="background-color:#cccccc"><a href="/wiki/Bismuth" title="Bismuth">Bi</a> </td> <td width="3.125%" style="background-color:#cccccc"><a href="/wiki/Polonium" title="Polonium">Po</a> </td> <td width="3.125%" style="background-color:#ffff99"><a href="/wiki/Astatine" title="Astatine">At</a> </td> <td width="3.125%" style="background-color:#c0ffff"><a href="/wiki/Radon" title="Radon">Rn</a> </td></tr> <tr> <td style="background-color:#ff6666"><a href="/wiki/Francium" title="Francium">Fr</a> </td> <td style="background-color:#ffdead"><a href="/wiki/Radium" title="Radium">Ra</a> </td> <td style="background-color:#ff99cc"><a href="/wiki/Actinium" title="Actinium">Ac</a> </td> <td style="background-color:#ff99cc"><a href="/wiki/Thorium" title="Thorium">Th</a> </td> <td style="background-color:#ff99cc"><a href="/wiki/Protactinium" title="Protactinium">Pa</a> </td> <td style="background-color:#ff99cc"><a href="/wiki/Uranium" title="Uranium">U</a> </td> <td style="background-color:#ff99cc"><a href="/wiki/Neptunium" title="Neptunium">Np</a> </td> <td style="background-color:#ff99cc"><a href="/wiki/Plutonium" title="Plutonium">Pu</a> </td> <td style="background-color:#ff99cc"><a href="/wiki/Americium" title="Americium">Am</a> </td> <td style="background-color:#ff99cc"><a href="/wiki/Curium" title="Curium">Cm</a> </td> <td style="background-color:#ff99cc"><a href="/wiki/Berkelium" title="Berkelium">Bk</a> </td> <td style="background-color:#ff99cc"><a href="/wiki/Californium" title="Californium">Cf</a> </td> <td style="background-color:#ff99cc"><a href="/wiki/Einsteinium" title="Einsteinium">Es</a> </td> <td style="background-color:#ff99cc"><a href="/wiki/Fermium" title="Fermium">Fm</a> </td> <td style="background-color:#ff99cc"><a href="/wiki/Mendelevium" title="Mendelevium">Md</a> </td> <td style="background-color:#ff99cc"><a href="/wiki/Nobelium" title="Nobelium">No</a> </td> <td style="background-color:#ff99cc"><a href="/wiki/Lawrencium" title="Lawrencium">Lr</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Rutherfordium" title="Rutherfordium">Rf</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Dubnium" title="Dubnium">Db</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Seaborgium" title="Seaborgium">Sg</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Bohrium" title="Bohrium">Bh</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Hassium" title="Hassium">Hs</a> </td> <td style="background-color:#e8e8e8"><a href="/wiki/Meitnerium" title="Meitnerium">Mt</a> </td> <td style="background-color:#e8e8e8"><a href="/wiki/Darmstadtium" title="Darmstadtium">Ds</a> </td> <td style="background-color:#e8e8e8"><a href="/wiki/Roentgenium" title="Roentgenium">Rg</a> </td> <td style="background-color:#ffc0c0"><a href="/wiki/Copernicium" title="Copernicium">Cn</a> </td> <td style="background-color:#e8e8e8"><a href="/wiki/Nihonium" title="Nihonium">Nh</a> </td> <td style="background-color:#e8e8e8"><a href="/wiki/Flerovium" title="Flerovium">Fl</a> </td> <td style="background-color:#e8e8e8"><a href="/wiki/Moscovium" title="Moscovium">Mc</a> </td> <td style="background-color:#e8e8e8"><a href="/wiki/Livermorium" title="Livermorium">Lv</a> </td> <td style="background-color:#e8e8e8"><a href="/wiki/Tennessine" title="Tennessine">Ts</a> </td> <td style="background-color:#e8e8e8"><a href="/wiki/Oganesson" title="Oganesson">Og</a> </td></tr> <tr> <td colspan="32"> <table border="1" align="center" style="border:1px solid #ffffff; border-collapse:collapse; font-size: smaller; width:100%" rules="all" cellpadding="1"> <tbody><tr> <td style="background-color:#ff6666" width="10%"><a href="/wiki/Alkali_metal" title="Alkali metal">Alkali metals</a> </td> <td style="background-color:#ffdead" width="10%"><a href="/wiki/Alkaline_earth_metal" title="Alkaline earth metal">Alkaline earth metals</a> </td> <td style="background-color:#ffbfff" width="10%"><a href="/wiki/Lanthanide" title="Lanthanide">Lanthanides</a> </td> <td style="background-color:#ff99cc" width="10%"><a href="/wiki/Actinide" title="Actinide">Actinides</a> </td> <td style="background-color:#ffc0c0" width="10%"><a href="/wiki/Transition_metal" title="Transition metal">Transition metals</a> </td> <td style="background-color:#cccccc" width="10%"><a href="/wiki/Post-transition_metal" title="Post-transition metal">Poor metals</a> </td> <td style="background-color:#cccc99" width="10%"><a class="mw-selflink selflink">Metalloids</a> </td> <td style="background-color:#a0ffa0" width="10%">Other <a href="/wiki/Nonmetal" title="Nonmetal">nonmetals</a> </td> <td style="background-color:#ffff99" width="10%"><a href="/wiki/Halogen" title="Halogen">Halogens</a> </td> <td style="background-color:#c0ffff" width="10%"><a href="/wiki/Noble_gas" title="Noble gas">Noble gases</a> </td></tr></tbody></table> </td></tr></tbody></table>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div 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