CINXE.COM

<!doctype html> <html lang="en"> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0">  <script async src="https://www.googletagmanager.com/gtag/js?id=G-ZK1E8XKBLT"></script> <script> window.dataLayer = window.dataLayer || []; function gtag(){dataLayer.push(arguments);} gtag('js', new Date()); gtag('config', 'G-ZK1E8XKBLT'); </script>  <title>WebElements Periodic Table » Krypton » radii of atoms and ions</title> <meta name="Description" content="This WebElements periodic table page contains radii of atoms and ions for the element krypton"> <meta name="keywords" content="krypton, atomic radius, covalent radius, bond length, van der Waals, ionic radius, Pauling radius, radii, radius, element radius, chemistry, periodic table, periodic chart, periodic system, chemical elements, chemical, webelements, web-elements, Sheffield, science, element, elements, metal, gas, atoms"> <link rel="stylesheet" href="../_newlands/pure/pure-min.css" type="text/css"> <link rel="stylesheet" href="../_newlands/pure/grids-responsive-min.css" type="text/css"> <link rel="stylesheet" href="../_newlands/pure-layout-side-menu/css/layouts/side-menu.css" type="text/css"> <link rel="stylesheet" href="../_newlands/css/webelements.css?parameter=1"> <meta name="author" content="Prof Mark Winter, University of Sheffield"> <meta name="copyright" content="Copyright 2024 Prof Mark Winter"> <link rel="index" href="./"> <link rel="shortcut icon" href="../favicon.png"> </head> <body> <div id="layout">  <a href="#menu" id="menuLink" class="menu-link">  <span></span> </a>  <div id="menu"> <div class="pure-menu"> <ul class="pure-menu-list"> <li class="pure-menu-item logo"><a href="../" class="pure-menu-link"><img height="30" src="../_media/icons/logo_60.png" alt="WebElements logo" /></a></li> <li class="pure-menu-item v"> <div id="NavigationPanel"> <table style="nav_panel"> <tr> <th class="navpanel-p"><a title="chlorine" href="../chlorine/atom_sizes.html">Cl</a></th> <th class="navpanel-p"><a title="argon" href="../argon/atom_sizes.html">Ar</a></th> <th class="navpanel-v"> </th> </tr> <tr> <th class="navpanel-p"><a title="bromine" href="../bromine/atom_sizes.html">Br</a></th> <th class="navpanel-p">Kr</th> <th class="navpanel-v"> </th> </tr> <tr> <th class="navpanel-p"><a title="iodine" href="../iodine/atom_sizes.html">I</a></th> <th class="navpanel-p"><a title="xenon" href="../xenon/atom_sizes.html">Xe</a></th> <th class="navpanel-v"> </th> </tr> </table> </div> </li>  <li class="pure-menu-item v"> <div class="element_select_centre"><a class="imagelink" title="Switch to a different element from here" href="../index.html"><img class="" src="../_media/locs/Kr-loc.png" alt="Krypton location" /></a> </div> </li>  <li class="pure-menu-item f"><a class="pure-menu-link f" href="../actinium/atom_sizes.html">Actinium ☢</a></li> <li class="pure-menu-item p"><a class="pure-menu-link p" href="../aluminium/atom_sizes.html">Aluminium</a></li> <li class="pure-menu-item p"><a class="pure-menu-link p" href="../aluminium/atom_sizes.html">Aluminum</a></li> <li class="pure-menu-item f"><a class="pure-menu-link f" href="../americium/atom_sizes.html">Americium ☢</a></li> <li class="pure-menu-item p"><a class="pure-menu-link p" href="../antimony/atom_sizes.html">Antimony</a></li> <li class="pure-menu-item p"><a class="pure-menu-link p" href="../argon/atom_sizes.html">Argon</a></li> <li class="pure-menu-item p"><a class="pure-menu-link p" href="../arsenic/atom_sizes.html">Arsenic</a></li> <li class="pure-menu-item p"><a class="pure-menu-link p" href="../astatine/atom_sizes.html">Astatine ☢</a></li> <li class="pure-menu-item s"><a class="pure-menu-link s" href="../barium/atom_sizes.html">Barium</a></li> <li class="pure-menu-item f"><a class="pure-menu-link f" href="../berkelium/atom_sizes.html">Berkelium ☢</a></li> <li class="pure-menu-item s"><a class="pure-menu-link s" href="../beryllium/atom_sizes.html">Beryllium</a></li> <li class="pure-menu-item p"><a class="pure-menu-link p" href="../bismuth/atom_sizes.html">Bismuth</a></li> <li class="pure-menu-item d"><a class="pure-menu-link d" href="../bohrium/atom_sizes.html">Bohrium ☢</a></li> <li class="pure-menu-item p"><a class="pure-menu-link p" href="../boron/atom_sizes.html">Boron</a></li> <li class="pure-menu-item p"><a class="pure-menu-link p" href="../bromine/atom_sizes.html">Bromine</a></li> <li class="pure-menu-item d"><a class="pure-menu-link d" href="../cadmium/atom_sizes.html">Cadmium</a></li> <li class="pure-menu-item s"><a class="pure-menu-link s" href="../caesium/atom_sizes.html">Caesium</a></li> <li class="pure-menu-item s"><a class="pure-menu-link s" href="../calcium/atom_sizes.html">Calcium</a></li> <li class="pure-menu-item f"><a class="pure-menu-link f" href="../californium/atom_sizes.html">Californium ☢</a></li> <li class="pure-menu-item p"><a class="pure-menu-link p" href="../carbon/atom_sizes.html">Carbon</a></li> <li class="pure-menu-item f"><a class="pure-menu-link f" href="../cerium/atom_sizes.html">Cerium</a></li> <li class="pure-menu-item s"><a class="pure-menu-link s" href="../caesium/atom_sizes.html">Cesium</a></li> <li class="pure-menu-item p"><a class="pure-menu-link p" href="../chlorine/atom_sizes.html">Chlorine</a></li> <li class="pure-menu-item d"><a class="pure-menu-link d" href="../chromium/atom_sizes.html">Chromium</a></li> <li class="pure-menu-item d"><a class="pure-menu-link d" href="../cobalt/atom_sizes.html">Cobalt</a></li> <li class="pure-menu-item d"><a class="pure-menu-link d" href="../copernicium/atom_sizes.html">Copernicium ☢</a></li> <li class="pure-menu-item d"><a class="pure-menu-link d" href="../copper/atom_sizes.html">Copper</a></li> <li class="pure-menu-item f"><a class="pure-menu-link f" href="../curium/atom_sizes.html">Curium ☢</a></li> <li class="pure-menu-item d"><a class="pure-menu-link d" href="../darmstadtium/atom_sizes.html">Darmstadtium ☢</a></li> <li class="pure-menu-item d"><a class="pure-menu-link d" href="../dubnium/atom_sizes.html">Dubnium ☢</a></li> <li class="pure-menu-item f"><a class="pure-menu-link f" href="../dysprosium/atom_sizes.html">Dysprosium</a></li> <li class="pure-menu-item f"><a class="pure-menu-link f" href="../einsteinium/atom_sizes.html">Einsteinium ☢</a></li> <li class="pure-menu-item f"><a class="pure-menu-link f" href="../erbium/atom_sizes.html">Erbium</a></li> <li class="pure-menu-item f"><a class="pure-menu-link f" href="../europium/atom_sizes.html">Europium</a></li> <li class="pure-menu-item f"><a class="pure-menu-link f" href="../fermium/atom_sizes.html">Fermium ☢</a></li> <li class="pure-menu-item p"><a class="pure-menu-link p" href="../flerovium/atom_sizes.html">Flerovium ☢</a></li> <li class="pure-menu-item p"><a class="pure-menu-link p" href="../fluorine/atom_sizes.html">Fluorine</a></li> <li class="pure-menu-item s"><a class="pure-menu-link s" href="../francium/atom_sizes.html">Francium</a></li> <li class="pure-menu-item f"><a class="pure-menu-link f" href="../gadolinium/atom_sizes.html">Gadolinium</a></li> <li class="pure-menu-item p"><a class="pure-menu-link p" href="../gallium/atom_sizes.html">Gallium</a></li> <li class="pure-menu-item p"><a class="pure-menu-link p" href="../germanium/atom_sizes.html">Germanium</a></li> <li class="pure-menu-item d"><a class="pure-menu-link d" href="../gold/atom_sizes.html">Gold</a></li> <li class="pure-menu-item d"><a class="pure-menu-link d" href="../hafnium/atom_sizes.html">Hafnium</a></li> <li class="pure-menu-item d"><a class="pure-menu-link d" href="../hassium/atom_sizes.html">Hassium ☢</a></li> <li class="pure-menu-item p"><a class="pure-menu-link p" href="../helium/atom_sizes.html">Helium</a></li> <li class="pure-menu-item f"><a class="pure-menu-link f" href="../holmium/atom_sizes.html">Holmium</a></li> <li class="pure-menu-item s"><a class="pure-menu-link s" href="../hydrogen/atom_sizes.html">Hydrogen</a></li> <li class="pure-menu-item p"><a class="pure-menu-link p" href="../indium/atom_sizes.html">Indium</a></li> <li class="pure-menu-item p"><a class="pure-menu-link p" href="../iodine/atom_sizes.html">Iodine</a></li> <li class="pure-menu-item d"><a class="pure-menu-link d" href="../iridium/atom_sizes.html">Iridium</a></li> <li class="pure-menu-item d"><a class="pure-menu-link d" href="../iron/atom_sizes.html">Iron</a></li> <li class="pure-menu-item p"><a class="pure-menu-link p" href="../krypton/atom_sizes.html">Krypton</a></li> <li class="pure-menu-item f"><a class="pure-menu-link f" href="../lanthanum/atom_sizes.html">Lanthanum</a></li> <li class="pure-menu-item d"><a class="pure-menu-link d" href="../lawrencium/atom_sizes.html">Lawrencium ☢</a></li> <li class="pure-menu-item p"><a class="pure-menu-link p" href="../lead/atom_sizes.html">Lead</a></li> <li class="pure-menu-item s"><a class="pure-menu-link s" href="../lithium/atom_sizes.html">Lithium</a></li> <li class="pure-menu-item p"><a class="pure-menu-link p" href="../livermorium/atom_sizes.html">Livermorium ☢</a></li> <li class="pure-menu-item d"><a class="pure-menu-link d" href="../lutetium/atom_sizes.html">Lutetium</a></li> <li class="pure-menu-item s"><a class="pure-menu-link s" href="../magnesium/atom_sizes.html">Magnesium</a></li> <li class="pure-menu-item d"><a class="pure-menu-link d" href="../manganese/atom_sizes.html">Manganese</a></li> <li class="pure-menu-item d"><a class="pure-menu-link d" href="../meitnerium/atom_sizes.html">Meitnerium ☢</a></li> <li class="pure-menu-item f"><a class="pure-menu-link f" href="../mendelevium/atom_sizes.html">Mendelevium ☢</a></li> <li class="pure-menu-item d"><a class="pure-menu-link d" href="../mercury/atom_sizes.html">Mercury</a></li> <li class="pure-menu-item d"><a class="pure-menu-link d" href="../molybdenum/atom_sizes.html">Molybdenum</a></li> <li class="pure-menu-item p"><a class="pure-menu-link p" href="../moscovium/atom_sizes.html">Moscovium ☢</a></li> <li class="pure-menu-item f"><a class="pure-menu-link f" href="../neodymium/atom_sizes.html">Neodymium</a></li> <li class="pure-menu-item p"><a class="pure-menu-link p" href="../neon/atom_sizes.html">Neon</a></li> <li class="pure-menu-item f"><a class="pure-menu-link f" href="../neptunium/atom_sizes.html">Neptunium</a></li> <li class="pure-menu-item d"><a class="pure-menu-link d" href="../nickel/atom_sizes.html">Nickel</a></li> <li class="pure-menu-item p"><a class="pure-menu-link p" href="../nihonium/atom_sizes.html">Nihonium ☢</a></li> <li class="pure-menu-item d"><a class="pure-menu-link d" href="../niobium/atom_sizes.html">Niobium</a></li> <li class="pure-menu-item p"><a class="pure-menu-link p" href="../nitrogen/atom_sizes.html">Nitrogen</a></li> <li class="pure-menu-item f"><a class="pure-menu-link f" href="../nobelium/atom_sizes.html">Nobelium</a></li> <li class="pure-menu-item p"><a class="pure-menu-link p" href="../oganesson/atom_sizes.html">Oganesson ☢</a></li> <li class="pure-menu-item d"><a class="pure-menu-link d" href="../osmium/atom_sizes.html">Osmium</a></li> <li class="pure-menu-item p"><a class="pure-menu-link p" href="../oxygen/atom_sizes.html">Oxygen</a></li> <li class="pure-menu-item d"><a class="pure-menu-link d" href="../palladium/atom_sizes.html">Palladium</a></li> <li class="pure-menu-item p"><a class="pure-menu-link p" href="../phosphorus/atom_sizes.html">Phosphorus</a></li> <li class="pure-menu-item d"><a class="pure-menu-link d" href="../platinum/atom_sizes.html">Platinum</a></li> <li class="pure-menu-item f"><a class="pure-menu-link f" href="../plutonium/atom_sizes.html">Plutonium ☢</a></li> <li class="pure-menu-item p"><a class="pure-menu-link p" href="../polonium/atom_sizes.html">Polonium</a></li> <li class="pure-menu-item s"><a class="pure-menu-link s" href="../potassium/atom_sizes.html">Potassium</a></li> <li class="pure-menu-item f"><a class="pure-menu-link f" href="../praseodymium/atom_sizes.html">Praseodymium</a></li> <li class="pure-menu-item f"><a class="pure-menu-link f" href="../promethium/atom_sizes.html">Promethium ☢</a></li> <li class="pure-menu-item f"><a class="pure-menu-link f" href="../protactinium/atom_sizes.html">Protactinium ☢</a></li> <li class="pure-menu-item s"><a class="pure-menu-link s" href="../radium/atom_sizes.html">Radium ☢</a></li> <li class="pure-menu-item p"><a class="pure-menu-link p" href="../radon/atom_sizes.html">Radon ☢</a></li> <li class="pure-menu-item d"><a class="pure-menu-link d" href="../rhenium/atom_sizes.html">Rhenium</a></li> <li class="pure-menu-item d"><a class="pure-menu-link d" href="../rhodium/atom_sizes.html">Rhodium</a></li> <li class="pure-menu-item d"><a class="pure-menu-link d" href="../roentgenium/atom_sizes.html">Roentgenium ☢</a></li> <li class="pure-menu-item s"><a class="pure-menu-link s" href="../rubidium/atom_sizes.html">Rubidium</a></li> <li class="pure-menu-item d"><a class="pure-menu-link d" href="../ruthenium/atom_sizes.html">Ruthenium</a></li> <li class="pure-menu-item d"><a class="pure-menu-link d" href="../rutherfordium/atom_sizes.html">Rutherfordium ☢</a></li> <li class="pure-menu-item f"><a class="pure-menu-link f" href="../samarium/atom_sizes.html">Samarium</a></li> <li class="pure-menu-item d"><a class="pure-menu-link d" href="../scandium/atom_sizes.html">Scandium</a></li> <li class="pure-menu-item d"><a class="pure-menu-link d" href="../seaborgium/atom_sizes.html">Seaborgium ☢</a></li> <li class="pure-menu-item p"><a class="pure-menu-link p" href="../selenium/atom_sizes.html">Selenium</a></li> <li class="pure-menu-item p"><a class="pure-menu-link p" href="../silicon/atom_sizes.html">Silicon</a></li> <li class="pure-menu-item d"><a class="pure-menu-link d" href="../silver/atom_sizes.html">Silver</a></li> <li class="pure-menu-item s"><a class="pure-menu-link s" href="../sodium/atom_sizes.html">Sodium</a></li> <li class="pure-menu-item s"><a class="pure-menu-link s" href="../strontium/atom_sizes.html">Strontium</a></li> <li class="pure-menu-item p"><a class="pure-menu-link p" href="../sulfur/atom_sizes.html">Sulfur</a></li> <li class="pure-menu-item p"><a class="pure-menu-link p" href="../sulfur/atom_sizes.html">Sulphur</a></li> <li class="pure-menu-item d"><a class="pure-menu-link d" href="../tantalum/atom_sizes.html">Tantalum</a></li> <li class="pure-menu-item d"><a class="pure-menu-link d" href="../technetium/atom_sizes.html">Technetium</a></li> <li class="pure-menu-item p"><a class="pure-menu-link p" href="../tellurium/atom_sizes.html">Tellurium</a></li> <li class="pure-menu-item p"><a class="pure-menu-link p" href="../tennessine/atom_sizes.html">Tennessine ☢</a></li> <li class="pure-menu-item f"><a class="pure-menu-link f" href="../terbium/atom_sizes.html">Terbium</a></li> <li class="pure-menu-item p"><a class="pure-menu-link p" href="../thallium/atom_sizes.html">Thallium</a></li> <li class="pure-menu-item f"><a class="pure-menu-link f" href="../thorium/atom_sizes.html">Thorium ☢</a></li> <li class="pure-menu-item f"><a class="pure-menu-link f" href="../thulium/atom_sizes.html">Thulium</a></li> <li class="pure-menu-item p"><a class="pure-menu-link p" href="../tin/atom_sizes.html">Tin</a></li> <li class="pure-menu-item d"><a class="pure-menu-link d" href="../titanium/atom_sizes.html">Titanium</a></li> <li class="pure-menu-item d"><a class="pure-menu-link d" href="../tungsten/atom_sizes.html">Tungsten</a></li> <li class="pure-menu-item f"><a class="pure-menu-link f" href="../uranium/atom_sizes.html">Uranium ☢</a></li> <li class="pure-menu-item d"><a class="pure-menu-link d" href="../vanadium/atom_sizes.html">Vanadium</a></li> <li class="pure-menu-item p"><a class="pure-menu-link p" href="../xenon/atom_sizes.html">Xenon</a></li> <li class="pure-menu-item f"><a class="pure-menu-link f" href="../ytterbium/atom_sizes.html">Ytterbium</a></li> <li class="pure-menu-item d"><a class="pure-menu-link d" href="../yttrium/atom_sizes.html">Yttrium</a></li> <li class="pure-menu-item d"><a class="pure-menu-link d" href="../zinc/atom_sizes.html">Zinc</a></li> <li class="pure-menu-item d"><a class="pure-menu-link d" href="../zirconium/atom_sizes.html">Zirconium</a></li> </ul> </div> </div>  <div class="pure-g"> <div class="pure-u-1"> <div class="pure-menu pure-menu-open pure-menu-horizontal centre" role="navigation" style="background: #000 url(../_media/elements/discharge/Kr.png) repeat-y center; background-size:contain;"> <span><a class="pure-menu-heading" href="https://winter.group.shef.ac.uk/webelements/"><img height="30" src="../_media/icons/logo_60.png" alt="WebElements logo"></a> <a class="white" href="./">Krypton - <sub>36</sub>Kr</a>  <audio id="myAudio_f"> <source src="../_media/elements/snds_f/Kr.mp3" type="audio/mpeg">Your user agent does not support the HTML5 Audio element. </audio> <button class="pure-button p_button" style=" display: inline;" type="button" onclick="audf_play_pause()"> 🔊  </button> <script> function audf_play_pause() { var myAudiof = document.getElementById("myAudio_f"); if (myAudiof.paused) { myAudiof.play(); } else { myAudiof.pause(); }} </script></span> </div> </div> </div> <div id="main">  <div class="pure-u-1 pure-u-sm-1-1"> <div class="pure-menu pure-menu-horizontal pure-menu-scrollable"> <a href="#" class="pure-menu-link pure-menu-heading">▸▸</a> <ul class="pure-menu-list"> <li class="pure-menu-item">🇬🇧 Krypton</li> <li class="pure-menu-item">🇺🇦 Криптон</li> <li class="pure-menu-item">🇨🇳 氪</li> <li class="pure-menu-item">🇳🇱 Krypton</li> <li class="pure-menu-item">🇫🇷 Krypton</li> <li class="pure-menu-item">🇩🇪 Krypton</li> <li class="pure-menu-item">🇮🇱 קריפטון</li> <li class="pure-menu-item">🇮🇹 Cripto</li> <li class="pure-menu-item">🇯🇵 クリプトン</li> <li class="pure-menu-item">🇵🇹 Criptônio</li> <li class="pure-menu-item">🇪🇸 Kriptón</li> <li class="pure-menu-item">🇸🇪 Krypton</li> <li class="pure-menu-item">🇷🇺 Криптон</li> </ul> </div> </div> <div class="pure-g"> <div class="pure-u-1 pure-u-sm-1-1"> <div class="google_navbar_positioning"> <form action="https://www.google.com" id="cse-search-box"> <div> <input type="hidden" name="cx" value="partner-pub-9334432533380510:6223510783"> <input type="hidden" name="ie" value="UTF-8"> <input type="text" name="q" size="28"> <input type="submit" name="sa" value="Search"> </div> </form> <script> </script> </div> </div> </div> <main> <div class="pure-g"> <div class="pure-u-1 pure-u-sm-1-1"> <h1 class="p">Krypton - <sub><small>36</small></sub>Kr: radii of atoms and ions</h1> <div class="pure-menu pure-menu-horizontal pure-menu-scrollable"> <ul class="pure-menu-list z_menu"> <li class="pure-menu-item p"><a href="../krypton/" class="pure-menu-link">▸▸ Kr Essentials</a></li> <li class="pure-menu-item p"><a class="pure-menu-link" href="../krypton/physics.html">Physical properties</a></li> <li class="pure-menu-item p"><a class="pure-menu-link" href="../krypton/atoms.html">Electron shell data</a></li> <li class="pure-menu-item p"><a class="pure-menu-link" href="../krypton/atom_sizes.html">Atom sizes</a></li> <li class="pure-menu-item p"><a class="pure-menu-link" href="../krypton/electronegativity.html">Electronegativity</a></li> <li class="pure-menu-item p"><a class="pure-menu-link" href="../krypton/isotopes.html" >Isotopes and NMR</a></li> <li class="pure-menu-item p"><a class="pure-menu-link" href="../krypton/crystal_structure.html">Crystal structure</a></li> <li class="pure-menu-item p"><a class="pure-menu-link" href="../krypton/thermochemistry.html">Thermochemistry</a></li> <li class="pure-menu-item p"><a class="pure-menu-link" href="../krypton/history.html">History</a></li> <li class="pure-menu-item p"><a class="pure-menu-link" href="../krypton/uses.html">Uses</a></li> <li class="pure-menu-item p"><a class="pure-menu-link" href="../krypton/geology.html">Geology</a></li> <li class="pure-menu-item p"><a class="pure-menu-link" href="../krypton/biology.html">Biology</a></li> <li class="pure-menu-item p"><a class="pure-menu-link" href="../krypton/compounds.html">Binary compounds</a></li> <li class="pure-menu-item p"><a class="pure-menu-link" href="../krypton/compound_properties.html" >Compound properties</a></li> <li class="pure-menu-item p"><a class="pure-menu-link" href="../krypton/chemistry.html">Element reactions</a></li> <li class="pure-menu-item p"><a class="pure-menu-link" href="../krypton/contents.html">List all Kr properties</a></li> </ul> </div> </div> </div> <p class="p_first">One measure of size is the element-element distance within the element. It is not always easy to make sensible comparisons between the elements however as some bonds are quite short because of multiple bonding (for instance the O=O distance in O<sub>2</sub> is short because of the the double bond connecting the two atoms. The <a href="../periodicity/bond_length_elem/" title="Select for graphical displays of periodicity of bond lengths in the elements">bond length in KrKr</a> is: 404pm. </p> <p>There are several other ways ways to define radius for atoms and ions. Follow the appropriate hyperlinks for literature references and definitions of each type of radius. All values of radii are given in picometres (pm). Conversion factors are:</p> <ul> <li>1 pm = 1 × 10<sup>‑12</sup> metre (meter)</li> <li>100 pm = 1 Ångstrom</li> <li>1000 pm = 1 nanometre (nm, nanometer)</li> </ul> <h2 class="p">Neutral radii</h2> <p>The size of neutral atoms depends upon the way in which the measurement is made and the environment. Follow the appropriate hyperlinks for definitions of each radius type. The term "atomic radius" is not particularly helpful although its use is widespread. The problem is its meaning, which is clearly very different in different sources and books. Two values are given here, one is based upon calculations and the other upon observation - follow the appropriate link for further details.</p> <div class="table-responsive"> <table class="pure-table pure-table-striped"> <thead> <tr> <th>Radius type</th> <th>Radius value / pm</th> <th>Periodicity link</th> </tr> </thead> <tbody> <tr> <td><a href="../periodicity/atom_radius_emp/" title="Select for graphical displays of periodicity of atomic radius for the elements">Atomic radius (empirical)</a></td> <td>-</td> <td><a href="../periodicity/atom_radius_emp/" title="Select for graphical displays of periodicity of atomic radius for the elements"><img src="../_media/periodicity/tables/sparktables2/atom_radius_emp.png" alt="empirical atomic radius of the chemical elements displayed on a miniature periodic table" /></a></td> </tr> <tr> <td><a href="../periodicity/atomic_radius/" title="Select for graphical displays of periodicity of atomic radius for the elements">Atomic radius (calculated)</a></td> <td>88</td> <td><a href="../periodicity/atomic_radius/" title="Select for graphical displays of periodicity of atomic radius for the elements"><img src="../_media/periodicity/tables/sparktables2/atomic_radius.png" alt="Atomic radius of the chemical elements displayed on a miniature periodic table" /></a></td> </tr> <tr> <td><a href="../periodicity/covalent_rad_2008/" title="Select for graphical displays of periodicity of covalent radius (2008 values) for the elements">Covalent radius (2008 values)</a></td> <td>116</td> <td><a href="../periodicity/covalent_rad_2008/" title="Select for graphical displays of periodicity of covalent radius (2008 values) for the elements"><img src="../_media/periodicity/tables/sparktables2/covalent_rad_2008.png" alt="2008 values of covalent radius of the chemical elements displayed on a miniature periodic table" /></a></td> </tr> <tr> <td><a href="../periodicity/rad_cov_single/" title="Select for graphical displays of periodicity of molecular single bond covalent radii for the elements">Molecular single bond covalent radius</a></td> <td>117 (coordination number 1,2)</td> <td><a href="../periodicity/rad_cov_single/" title="Select for graphical displays of periodicity of molecular single bond covalent radii for the elements"><img src="../_media/periodicity/tables/sparktables2/rad_cov_single.png" alt="Molecular single bond covalent radii of the chemical elements displayed on a miniature periodic table" /></a></td> </tr> <tr> <td><a href="../periodicity/rad_cov_double/" title="Select for graphical displays of periodicity of molecular double bond covalent radii for the elements">Molecular double bond covalent radius</a></td> <td>121</td> <td><a href="../periodicity/rad_cov_double/" title="Select for graphical displays of periodicity of molecular double bond covalent radii for the elements"><img src="../_media/periodicity/tables/sparktables2/rad_cov_double.png" alt="Molecular double bond covalent radii of the chemical elements displayed on a miniature periodic table" /></a></td> </tr> <tr> <td><a href="../periodicity/rad_cov_triple/" title="Select for graphical displays of periodicity of molecular triple bond covalent radii for the elements">Molecular triple bond covalent radius</a></td> <td>108</td> <td><a href="../periodicity/rad_cov_triple/" title="Select for graphical displays of periodicity of molecular triple bond covalent radii for the elements"><img src="../_media/periodicity/tables/sparktables2/rad_cov_triple.png" alt="Molecular triple bond covalent radii of the chemical elements displayed on a miniature periodic table" /></a></td> </tr> <tr> <td><a href="../periodicity/covalent_radius/" title="Select for graphical displays of periodicity of covalent radius for the elements">Covalent radius (empirical)</a></td> <td>110</td> <td><a href="../periodicity/covalent_radius/" title="Select for graphical displays of periodicity of covalent radius for the elements"><img src="../_media/periodicity/tables/sparktables2/covalent_radius.png" alt="covalent radius of the chemical elements displayed on a miniature periodic table" /></a></td> </tr> <tr> <td><a href="../periodicity/van_der_waals_rad/" title="Select for graphical displays of periodicity of van der Waals' radius for the elements">van der Waals radius</a></td> <td>225</td> <td><a href="../periodicity/van_der_waals_rad/" title="Select for graphical displays of periodicity of van der Waals' radius for the elements"><img src="../_media/periodicity/tables/sparktables2/van_der_waals_rad.png" alt="Van der Waals' radius of the chemical elements displayed on a miniature periodic table" /></a></td> </tr> </tbody> </table> </div> <figure><img class="pure-img" src= "../_media/periodicity/tables/periodic_table_balls_black/atomic_radius_balls_b.png" alt="Image showing periodicity for atomic radius for the chemical elements as size-coded balls on a periodic table grid." /><figcaption>Image showing periodicity of atomic radius for the chemical elements as size-coded balls on a periodic table grid.</figcaption></figure> <figure><img class="pure-img" src= "../_media/periodicity/tables/periodic_table_balls_black/rad_cov_single_balls_b.png" alt="Image showing periodicity of single bond covalent radius for the chemical elements as size-coded balls on a periodic table grid." /><figcaption>Image showing periodicity of single bond covalent radius for the chemical elements as size-coded balls on a periodic table grid.</figcaption></figure> <div class="pure-g"> <div class="pure-u-1 pure-u-sm-1-1"> <script async src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>  <ins class="adsbygoogle" style="display:block" data-ad-client="ca-pub-9334432533380510" data-ad-slot="4479092381" data-ad-format="auto"></ins> <script> (adsbygoogle = window.adsbygoogle || []).push({}); </script> </div> </div> <h2 class="p">Valence shell orbital radii</h2> <p>The following are calculated values of <a href="../periodicity/valence_orbital_r_maxima/">valence shell orbital radii</a>, R<sub>max</sub></p> <div class="table-responsive"> <table class="pure-table pure-table-striped"> <caption>Table: valence shell orbital radii for krypton.</caption> <thead> <tr> <th>Orbital</th> <th>Radius [/pm]</th> <th>Radius [/AU]</th> <th>Periodicity link</th> </tr> </thead> <tbody> <tr> <td><a href="../periodicity/rad_valence_s/">s orbital</a></td> <td>72.9</td> <td>1.37699</td> <td><a href="../periodicity/rad_valence_s/" title="Select for graphical displays of periodicity of s-orbital radius for the elements"><img src="../_media/periodicity/tables/sparktables2/rad_valence_s.png" alt="s-orbital radius radius of the chemical elements displayed on a miniature periodic table" /></a></td> </tr> <tr> <td><a href="../periodicity/rad_valence_p/">p orbital</a></td> <td>82.9</td> <td>1.56579</td> <td><a href="../periodicity/rad_valence_p/" title="Select for graphical displays of periodicity of p-orbital radius for the elements"><img src="../_media/periodicity/tables/sparktables2/rad_valence_p.png" alt="p-orbital radius radius of the chemical elements displayed on a miniature periodic table" /></a></td> </tr> <tr> <td><a href="../periodicity/rad_valence_d/">d orbital</a></td> <td>21.9</td> <td>0.413333</td> <td><a href="../periodicity/rad_valence_d/" title="Select for graphical displays of periodicity of d-orbital radius for the elements"><img src="../_media/periodicity/tables/sparktables2/rad_valence_d.png" alt="d-orbital radius radius of the chemical elements displayed on a miniature periodic table" /></a></td> </tr> <tr> <td><a href="../periodicity/rad_valence_f/">f orbital</a></td> <td>-</td> <td>-</td> <td><a href="../periodicity/rad_valence_f/" title="Select for graphical displays of periodicity of f-orbital radius for the elements"><img src="../_media/periodicity/tables/sparktables2/rad_valence_f.png" alt="f-orbital radius radius of the chemical elements displayed on a miniature periodic table" /></a></td> </tr> </tbody> </table> </div> <figure><img class="pure-img" src= "../_media/periodicity/tables/periodic_table_balls_black/rad_valence_s_balls_b.png" alt="Image showing periodicity of valence s-orbital radius for the chemical elements as size-coded balls on a periodic table grid." /><figcaption>Image showing periodicity of valence s-orbital radius for the chemical elements as size-coded balls on a periodic table grid.</figcaption></figure> <h3 class="p">References</h3> <p>The R<sub>max</sub> values for neutral gaseous element valence orbitals are abstracted from reference 1.</p> <ol> <li>J.B. Mann, <em>Atomic Structure Calculations II. Hartree-Fock wave functions and radial expectation values: hydrogen to lawrencium</em>, LA-3691, Los Alamos Scientific Laboratory, USA, 1968.</li> </ol> <h2 class="p">Ionic radii</h2> <p>This table gives some <a href="../periodicity/ionic_radius/" title="Select for definitions and graphical displays of periodicity of ionic radii for the elements">ionic radii</a>. In this table, <em>geometry</em> refers to the arrangment of the ion's nearest neighbours. Size does depend upon geometry and environment. For electronic configurations, where it matters, the values given for octahedral species are low spin unless stated to be high spin. The terms <em>low spin</em> and <em>high spin</em> refer to the electronic configurations of particular geomtries of certain <em>d</em>-block metal ions. Further information is available in inorganic chemistry textbooks, usually at Level 1 or First Year University level. For definitions of <a href="../periodicity/ionic_radius/" title="Select for definitions and graphical displays of periodicity of ionic radii for the elements">ionic</a> radius and further information, follow the hypertext link.</p> <div class="table-responsive"> <table class="pure-table pure-table-striped"> <thead> <tr> <th>Ion</th> <th>Coordination type</th> <th>Radius / pm</th> <th>Periodicity link</th> </tr> </thead> <tbody> <tr><td colspan="4">No ionic radii for Kr</td></tr></tbody> </table> </div> <h2 class="p">Pauling ionic radii</h2> <div class="table-responsive"> <table class="pure-table pure-table-striped"> <caption>This table shows Pauling radii for krypton</caption> <thead> <tr> <th>Ion</th> <th>Pauling radius / pm</th> <th>Periodicity link</th> </tr> </thead> <tbody> <tr> <td>Kr(I)</td> <td>169</td> <td><a href="../periodicity/ion_rad_pauling_1/" title="Select for graphical displays of periodicity of Pauling radius for +1 ions"><img src="../_media/periodicity/tables/sparktables2/ion_rad_pauling_1.png" alt="Pauling radius for +1 ions of the chemical elements displayed on a miniature periodic table"></a></td> </tr> </tbody></table></div> </div> </main> <div id="footer"> <footer> <div class="footer"> <div class="pure-g"> <div class="pure-u-1-2 pure-u-sm-1-2 pure-u-lg-1-4 pure-menu custom-restricted-width"> <ul class="pure-menu-list"> <li class="pure-menu-heading footer_h">Key properties</li> <li class="pure-menu-item"><a class="pure-menu-link" href="https://www.webelements.com/periodicity/eneg_pauling/">Electronegativity </a></li> <li class="pure-menu-item"><a class="pure-menu-link" href="https://www.webelements.com/periodicity/melting_point/">Melting point</a></li> <li class="pure-menu-item"><a class="pure-menu-link" href="https://www.webelements.com/periodicity/density/">Density </a></li> <li class="pure-menu-item"><a class="pure-menu-link" href="https://www.webelements.com/periodicity/molar_volume/">Molar volume</a></li> <li class="pure-menu-item"><a class="pure-menu-link" href="https://www.webelements.com/periodicity/ionis_energy_1/">Ionization energy (1st)</a></li> <li class="pure-menu-item"><a class="pure-menu-link" href="https://www.webelements.com/periodicity/covalent_radius/">Covalent radius</a></li> <li class="pure-menu-item"><a class="pure-menu-link" href="https://www.webelements.com/periodicity/metallic_radius/">Metallic radius</a></li> <li class="pure-menu-item"><a class="pure-menu-link" href="https://www.webelements.com/periodicity/abund_crust/">Abundance: earth's crust</a></li> </ul> </div> <div class="pure-u-1-2 pure-u-sm-1-2 pure-u-lg-1-4 pure-menu custom-restricted-width"> <ul class="pure-menu-list"> <li class="pure-menu-heading footer_h">Shop</li> <li class="pure-menu-item">Sorry, shop closed</li> </ul> </div> <div class="pure-u-1-2 pure-u-sm-1-2 pure-u-lg-1-4 pure-menu custom-restricted-width"> <ul class="pure-menu-list"> <li class="pure-menu-heading footer_h">Social</li> <li class="pure-menu-item"><a class="pure-menu-link" href="https://www.facebook.com/webelements.periodic.table">Facebook</a></li> <li class="pure-menu-item"><a class="pure-menu-link" href="https://twitter.com/periodic_table">Twitter</a></li> <li class="pure-menu-item"><a class="pure-menu-link" href="https://www.pinterest.com/periodictable/">Pinterest</a></li> </ul> </div> <div class="pure-u-1-2 pure-u-sm-1-2 pure-u-lg-1-4 pure-menu custom-restricted-width"> <ul class="pure-menu-list"> <li class="pure-menu-heading footer_h">Administration</li> <li class="pure-menu-item"><a class="pure-menu-link" href="https://www.webelements.com/nexus/your-privacy/" title="Your privacy">Privacy</a></li> <li class="pure-menu-item"><a class="pure-menu-link" href="https://www.webelements.com/nexus/about-webelements/" title="About WebElements">About</a></li> <li class="pure-menu-item"><a class="pure-menu-link" href="https://www.webelements.com/nexus/webelements-and-copyright/" title="Copyright information about WebElements">Copyright</a></li> <li class="pure-menu-item"><a class="pure-menu-link" href="https://www.webelements.com/nexus/acknowledgements/" title="Acknowledgements">Thanks...</a></li> </ul> </div> </div> </div> <address> <p> <a href="https://www.webelements.com/"><img class="logo_m" src="../_media/icons/logo_60.png" alt="WebElements home" /></a><br /> <strong>WebElements:</strong> THE periodic table on the WWW [<a href="https://www.webelements.com/">www.webelements.com</a>]<br /> <a href="https://www.webelements.com/nexus/webelements-and-copyright/">Copyright </a> 1993-2024 <a href="https://winter.group.shef.ac.uk/">Mark Winter</a> [ <a href="https://www.sheffield.ac.uk/chemistry/">The University of Sheffield </a> and WebElements Ltd, UK]. All rights reserved.</p> <p>You can reference the WebElements periodic table as follows:<br />"WebElements, https://www.webelements.com, accessed November 2024."</p> </address> </footer> </div> </div> </div> <script src="../_newlands/javascript/menus.js"></script> <script src="../_newlands/pure-layout-side-menu/js/ui.js"></script> </body> </html>