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Modelul atomic Rutherford - Wikipedia
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class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Bibliografie"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Bibliografie</span> </div> </a> <ul id="toc-Bibliografie-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Legături_externe" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Legături_externe"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Legături externe</span> </div> </a> <ul id="toc-Legături_externe-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Vezi_și" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Vezi_și"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>Vezi și</span> </div> </a> <ul id="toc-Vezi_și-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Cuprins" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Comută cuprinsul" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Comută cuprinsul</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Modelul atomic Rutherford</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Mergeți la un articol în altă limbă. Disponibil în 43 limbi" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-43" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">43 limbi</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-an mw-list-item"><a href="https://an.wikipedia.org/wiki/Modelo_atomico_de_Rutherford" title="Modelo atomico de Rutherford – aragoneză" lang="an" hreflang="an" data-title="Modelo atomico de Rutherford" data-language-autonym="Aragonés" data-language-local-name="aragoneză" class="interlanguage-link-target"><span>Aragonés</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D9%86%D9%85%D9%88%D8%B0%D8%AC_%D8%B1%D8%B0%D8%B1%D9%81%D9%88%D8%B1%D8%AF_%D9%84%D9%84%D8%B0%D8%B1%D8%A9" title="نموذج رذرفورد للذرة – arabă" lang="ar" hreflang="ar" data-title="نموذج رذرفورد للذرة" data-language-autonym="العربية" data-language-local-name="arabă" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/Modelu_at%C3%B3micu_de_Rutherford" title="Modelu atómicu de Rutherford – asturiană" lang="ast" hreflang="ast" data-title="Modelu atómicu de Rutherford" data-language-autonym="Asturianu" data-language-local-name="asturiană" class="interlanguage-link-target"><span>Asturianu</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/Ruterford_atom_modeli" title="Ruterford atom modeli – azeră" lang="az" hreflang="az" data-title="Ruterford atom modeli" data-language-autonym="Azərbaycanca" data-language-local-name="azeră" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/%D0%9F%D0%BB%D0%B0%D0%BD%D0%B5%D1%82%D0%B0%D1%80%D0%BD%D0%B0%D1%8F_%D0%BC%D0%B0%D0%B4%D1%8D%D0%BB%D1%8C_%D0%B0%D1%82%D0%B0%D0%BC%D0%B0" title="Планетарная мадэль атама – belarusă" lang="be" hreflang="be" data-title="Планетарная мадэль атама" data-language-autonym="Беларуская" data-language-local-name="belarusă" class="interlanguage-link-target"><span>Беларуская</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%9C%D0%BE%D0%B4%D0%B5%D0%BB_%D0%BD%D0%B0_%D0%A0%D1%8A%D0%B4%D1%8A%D1%80%D1%84%D0%BE%D1%80%D0%B4" title="Модел на Ръдърфорд – bulgară" lang="bg" hreflang="bg" data-title="Модел на Ръдърфорд" data-language-autonym="Български" data-language-local-name="bulgară" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%B0%E0%A6%BE%E0%A6%A6%E0%A6%BE%E0%A6%B0%E0%A6%AB%E0%A7%8B%E0%A6%B0%E0%A7%8D%E0%A6%A1_%E0%A6%AA%E0%A6%B0%E0%A6%AE%E0%A6%BE%E0%A6%A3%E0%A7%81_%E0%A6%AE%E0%A6%A1%E0%A7%87%E0%A6%B2" title="রাদারফোর্ড পরমাণু মডেল – bengaleză" lang="bn" hreflang="bn" data-title="রাদারফোর্ড পরমাণু মডেল" data-language-autonym="বাংলা" data-language-local-name="bengaleză" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Model_at%C3%B2mic_de_Rutherford" title="Model atòmic de Rutherford – catalană" lang="ca" hreflang="ca" data-title="Model atòmic de Rutherford" data-language-autonym="Català" data-language-local-name="catalană" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Rutherford%C5%AFv_model_atomu" title="Rutherfordův model atomu – cehă" lang="cs" hreflang="cs" data-title="Rutherfordův model atomu" data-language-autonym="Čeština" data-language-local-name="cehă" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Rutherfordsches_Atommodell" title="Rutherfordsches Atommodell – germană" lang="de" hreflang="de" data-title="Rutherfordsches Atommodell" data-language-autonym="Deutsch" data-language-local-name="germană" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%91%CF%84%CE%BF%CE%BC%CE%B9%CE%BA%CF%8C_%CF%80%CF%81%CF%8C%CF%84%CF%85%CF%80%CE%BF_%CF%84%CE%BF%CF%85_%CE%A1%CE%AC%CE%B4%CE%B5%CF%81%CF%86%CE%BF%CF%81%CE%BD%CF%84" title="Ατομικό πρότυπο του Ράδερφορντ – greacă" lang="el" hreflang="el" data-title="Ατομικό πρότυπο του Ράδερφορντ" data-language-autonym="Ελληνικά" data-language-local-name="greacă" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Rutherford_model" title="Rutherford model – engleză" lang="en" hreflang="en" data-title="Rutherford model" data-language-autonym="English" data-language-local-name="engleză" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Modelo_at%C3%B3mico_de_Rutherford" title="Modelo atómico de Rutherford – spaniolă" lang="es" hreflang="es" data-title="Modelo atómico de Rutherford" data-language-autonym="Español" data-language-local-name="spaniolă" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Rutherforden_eredu_atomikoa" title="Rutherforden eredu atomikoa – bască" lang="eu" hreflang="eu" data-title="Rutherforden eredu atomikoa" data-language-autonym="Euskara" data-language-local-name="bască" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D9%85%D8%AF%D9%84_%D8%A7%D8%AA%D9%85%DB%8C_%D8%B1%D8%A7%D8%AF%D8%B1%D9%81%D9%88%D8%B1%D8%AF" title="مدل اتمی رادرفورد – persană" lang="fa" hreflang="fa" data-title="مدل اتمی رادرفورد" data-language-autonym="فارسی" data-language-local-name="persană" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Rutherfordin_atomimalli" title="Rutherfordin atomimalli – finlandeză" lang="fi" hreflang="fi" data-title="Rutherfordin atomimalli" data-language-autonym="Suomi" data-language-local-name="finlandeză" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Mod%C3%A8le_atomique_de_Rutherford" title="Modèle atomique de Rutherford – franceză" lang="fr" hreflang="fr" data-title="Modèle atomique de Rutherford" data-language-autonym="Français" data-language-local-name="franceză" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%94%D7%9E%D7%95%D7%93%D7%9C_%D7%94%D7%A4%D7%9C%D7%A0%D7%98%D7%A8%D7%99" title="המודל הפלנטרי – ebraică" lang="he" hreflang="he" data-title="המודל הפלנטרי" data-language-autonym="עברית" data-language-local-name="ebraică" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%B0%E0%A4%A6%E0%A4%B0%E0%A4%AB%E0%A5%8B%E0%A4%B0%E0%A5%8D%E0%A4%A1_%E0%A4%95%E0%A4%BE_%E0%A4%AA%E0%A4%B0%E0%A4%AE%E0%A4%BE%E0%A4%A3%E0%A5%81_%E0%A4%AE%E0%A5%89%E0%A4%A1%E0%A4%B2" title="रदरफोर्ड का परमाणु मॉडल – hindi" lang="hi" hreflang="hi" data-title="रदरफोर्ड का परमाणु मॉडल" data-language-autonym="हिन्दी" data-language-local-name="hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Rutherfordov_model_atoma" title="Rutherfordov model atoma – croată" lang="hr" hreflang="hr" data-title="Rutherfordov model atoma" data-language-autonym="Hrvatski" data-language-local-name="croată" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Rutherford-f%C3%A9le_atommodell" title="Rutherford-féle atommodell – maghiară" lang="hu" hreflang="hu" data-title="Rutherford-féle atommodell" data-language-autonym="Magyar" data-language-local-name="maghiară" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D4%B1%D5%BF%D5%B8%D5%B4%D5%AB_%D5%B4%D5%B8%D5%AC%D5%B8%D6%80%D5%A1%D5%AF%D5%A1%D5%B5%D5%AB%D5%B6_%D5%B4%D5%B8%D5%A4%D5%A5%D5%AC" title="Ատոմի մոլորակային մոդել – armeană" lang="hy" hreflang="hy" data-title="Ատոմի մոլորակային մոդել" data-language-autonym="Հայերեն" data-language-local-name="armeană" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Model_Rutherford" title="Model Rutherford – indoneziană" lang="id" hreflang="id" data-title="Model Rutherford" data-language-autonym="Bahasa Indonesia" data-language-local-name="indoneziană" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Modello_atomico_di_Rutherford" title="Modello atomico di Rutherford – italiană" lang="it" hreflang="it" data-title="Modello atomico di Rutherford" data-language-autonym="Italiano" data-language-local-name="italiană" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E3%83%A9%E3%82%B6%E3%83%95%E3%82%A9%E3%83%BC%E3%83%89%E3%81%AE%E5%8E%9F%E5%AD%90%E6%A8%A1%E5%9E%8B" title="ラザフォードの原子模型 – japoneză" lang="ja" hreflang="ja" data-title="ラザフォードの原子模型" data-language-autonym="日本語" data-language-local-name="japoneză" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EB%9F%AC%EB%8D%94%ED%8D%BC%EB%93%9C_%EC%9B%90%EC%9E%90_%EB%AA%A8%ED%98%95" title="러더퍼드 원자 모형 – coreeană" lang="ko" hreflang="ko" data-title="러더퍼드 원자 모형" data-language-autonym="한국어" data-language-local-name="coreeană" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%A0%D0%B0%D0%B4%D0%B5%D1%80%D1%84%D0%BE%D1%80%D0%B4%D0%BE%D0%B2_%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB_%D0%BD%D0%B0_%D0%B0%D1%82%D0%BE%D0%BC%D0%BE%D1%82" title="Радерфордов модел на атомот – macedoneană" lang="mk" hreflang="mk" data-title="Радерфордов модел на атомот" data-language-autonym="Македонски" data-language-local-name="macedoneană" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%B1%E0%B5%82%E0%B4%A5%E0%B5%BC%E0%B4%AB%E0%B5%8B%E0%B5%BC%E0%B4%A1%E0%B5%8D_%E0%B4%AE%E0%B4%BE%E0%B4%A4%E0%B5%83%E0%B4%95" title="റൂഥർഫോർഡ് മാതൃക – malayalam" lang="ml" hreflang="ml" data-title="റൂഥർഫോർഡ് മാതൃക" 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/Atoommodel_van_Rutherford" title="Atoommodel van Rutherford – neerlandeză" lang="nl" hreflang="nl" data-title="Atoommodel van Rutherford" data-language-autonym="Nederlands" data-language-local-name="neerlandeză" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Rutherfords_atommodell" title="Rutherfords atommodell – norvegiană bokmål" lang="nb" hreflang="nb" data-title="Rutherfords atommodell" data-language-autonym="Norsk bokmål" data-language-local-name="norvegiană bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Model_atomu_Rutherforda" title="Model atomu Rutherforda – poloneză" lang="pl" hreflang="pl" data-title="Model atomu Rutherforda" data-language-autonym="Polski" data-language-local-name="poloneză" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pnb mw-list-item"><a href="https://pnb.wikipedia.org/wiki/%D8%B1%D8%AF%D8%B1%D9%81%D9%88%D8%B1%DA%88_%D9%85%D8%A7%DA%88%D9%84" title="ردرفورڈ ماڈل – Western Punjabi" lang="pnb" hreflang="pnb" data-title="ردرفورڈ ماڈل" data-language-autonym="پنجابی" data-language-local-name="Western Punjabi" class="interlanguage-link-target"><span>پنجابی</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Modelo_at%C3%B4mico_de_Rutherford" title="Modelo atômico de Rutherford – portugheză" lang="pt" hreflang="pt" data-title="Modelo atômico de Rutherford" data-language-autonym="Português" data-language-local-name="portugheză" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%9F%D0%BB%D0%B0%D0%BD%D0%B5%D1%82%D0%B0%D1%80%D0%BD%D0%B0%D1%8F_%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D1%8C_%D0%B0%D1%82%D0%BE%D0%BC%D0%B0" title="Планетарная модель атома – rusă" lang="ru" hreflang="ru" data-title="Планетарная модель атома" data-language-autonym="Русский" data-language-local-name="rusă" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Planetarni_model_atoma" title="Planetarni model atoma – sârbo-croată" lang="sh" hreflang="sh" data-title="Planetarni model atoma" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="sârbo-croată" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li 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class="noprint">De la Wikipedia, enciclopedia liberă</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="ro" dir="ltr"><figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/Fi%C8%99ier:Rutherford_atomic_planetary_model.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e8/Rutherford_atomic_planetary_model.svg/220px-Rutherford_atomic_planetary_model.svg.png" decoding="async" width="220" height="220" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e8/Rutherford_atomic_planetary_model.svg/330px-Rutherford_atomic_planetary_model.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/e8/Rutherford_atomic_planetary_model.svg/440px-Rutherford_atomic_planetary_model.svg.png 2x" data-file-width="500" data-file-height="500" /></a><figcaption>Modelul atomic Rutherford: electroni (verde) și nucleu (roșu).</figcaption></figure> <p><b>Modelul atomic Rutherford</b>, elaborat de <a href="/wiki/Ernest_Rutherford" title="Ernest Rutherford">Ernest Rutherford</a> în <a href="/wiki/1911" title="1911">1911</a>, este primul <b>model planetar</b> al atomului. Conform acestui model, <a href="/wiki/Atom" title="Atom">atomul</a> este format din <a href="/wiki/Nucleu_atomic" title="Nucleu atomic">nucleu</a>, în care este concentrată sarcina pozitivă, și <a href="/wiki/Electron" title="Electron">electroni</a> care se rotesc în jurul nucleului pe orbite circulare, asemeni <a href="/wiki/Planet%C4%83" title="Planetă">planetelor</a> în <a href="/wiki/Sistem_solar" class="mw-redirect" title="Sistem solar">Sistemul Solar</a>. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Elaborarea_modelului">Elaborarea modelului</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Modelul_atomic_Rutherford&veaction=edit&section=1" title="Modifică secțiunea: Elaborarea modelului" class="mw-editsection-visualeditor"><span>modificare</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Modelul_atomic_Rutherford&action=edit&section=1" title="Edit section's source code: Elaborarea modelului"><span>modificare sursă</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Modelul a fost dezvoltat în urma experimentelor realizate de către <a href="/wiki/Hans_Geiger" title="Hans Geiger">Hans Geiger</a> și <a href="/w/index.php?title=Ernest_Marsden&action=edit&redlink=1" class="new" title="Ernest Marsden — pagină inexistentă">Ernest Marsden</a> în anul <a href="/wiki/1909" title="1909">1909</a>. Ei au studiat, sub îndrumarea lui <a href="/wiki/Ernest_Rutherford" title="Ernest Rutherford">Ernest Rutherford</a>, <a href="/w/index.php?title=%C3%8Empr%C4%83%C8%99tierea_particulelor_%CE%B1&action=edit&redlink=1" class="new" title="Împrăștierea particulelor α — pagină inexistentă">împrăștierea particulelor α</a> la trecerea printr-o foiță subțire din <a href="/wiki/Aur" title="Aur">aur</a>. Conform modelului atomic elaborat de <a href="/wiki/J.J._Thomson" class="mw-redirect" title="J.J. Thomson">Thomson</a>, particulele trebuiau să fie deviate cu câteva grade la trecerea prin metal din cauza <a href="/wiki/For%C8%9Ba_electrostatic%C4%83" class="mw-redirect" title="Forța electrostatică">forțelor electrostatice</a>. S-a constatat, însă, că unele dintre ele erau deviate cu <a href="/wiki/Unghi" title="Unghi">unghiuri</a> mai mari decât 90° sau chiar cu 180°. Acest fapt a fost explicat prin existența unei neuniformități a distribuției de <a href="/wiki/Sarcin%C4%83_electric%C4%83" title="Sarcină electrică">sarcină electrică</a> în interiorul atomului. Pe baza observațiilor efectuate, Rutherford a propus un nou model în care sarcina pozitivă era concentrată în centrul atomului, iar electronii orbitau în jurul acesteia. </p><p> Noul model introducea noțiunea de <a href="/wiki/Nucleu_atomic" title="Nucleu atomic">nucleu</a>, fără a-l numi astfel. Rutherford se referea, în lucrarea sa din <a href="/wiki/1911" title="1911">1911</a>, la o concentrare a sarcinii electrice pozitive:</p><blockquote><p><i>"Se consideră trecerea unei particule de mare viteză printr-un atom având o sarcină pozitivă centrală </i>N e<i>, compensată de sarcina a </i>N<i> electroni."</i></p></blockquote><p> El a estimat, din <a href="/w/index.php?title=Conservarea_energiei&action=edit&redlink=1" class="new" title="Conservarea energiei — pagină inexistentă">considerente energetice</a>, că, pentru atomul de aur, aceasta ar avea o rază de cel mult 3.4 x 10<sup>-14</sup> <a href="/wiki/Metru" title="Metru">metri</a> (valoarea actuală este egală cu aproximativ o cincime din aceasta). Mărimea razei atomului de <a href="/wiki/Aur" title="Aur">aur</a> era estimată la 10<sup>-10</sup> metri, de aproape 3000 de ori mai mare decât cea a nucleului. </p><p>Rutherford a presupus că mărimea sarcinii pozitive ar fi proporțională cu <a href="/wiki/Mas%C4%83_atomic%C4%83" title="Masă atomică">masa atomică</a> exprimată în <a href="/wiki/Unitate_atomic%C4%83_de_mas%C4%83" title="Unitate atomică de masă">unități atomice</a>, având jumătate din valoarea acesteia. A obținut pentru aur o masă atomică de 196 (față de 197, valoarea actuală). El nu a făcut corelația cu <a href="/wiki/Num%C4%83r_atomic" title="Număr atomic">numărul atomic</a> Z, estimând valoarea sarcinii la 98 <i>e</i>, față de 79, unde <i>e</i> reprezintă sarcina electronului. </p><p>Modelul propus de Rutherford descrie nucleul, dar nu atribuie nici o structură <a href="/wiki/Orbit%C4%83" class="mw-disambig" title="Orbită">orbitelor</a> electronilor. Totuși, în lucrare este menționat <a href="/w/index.php?title=Modelul_saturnian_al_atomului&action=edit&redlink=1" class="new" title="Modelul saturnian al atomului — pagină inexistentă">modelul saturnian</a> al lui <a href="/w/index.php?title=Hantaro_Nagaoka&action=edit&redlink=1" class="new" title="Hantaro Nagaoka — pagină inexistentă">Hantaro Nagaoka</a>, în care electronii sunt aranjați pe <a href="/wiki/Inel" title="Inel">inele</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Deficiențe_ale_modelului"><span id="Deficien.C8.9Be_ale_modelului"></span>Deficiențe ale modelului</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Modelul_atomic_Rutherford&veaction=edit&section=2" title="Modifică secțiunea: Deficiențe ale modelului" class="mw-editsection-visualeditor"><span>modificare</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Modelul_atomic_Rutherford&action=edit&section=2" title="Edit section's source code: Deficiențe ale modelului"><span>modificare sursă</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Principalul neajuns al modelului consta în faptul că acesta nu explica stabilitatea <a href="/wiki/Atom" title="Atom">atomului</a>. Fiind elaborat în concordanță cu <a href="/wiki/Fizic%C4%83_clasic%C4%83" title="Fizică clasică">teoriile clasice</a>, presupunea că electronii aflați în mișcare circulară, deci accelerată, emit constant <a href="/wiki/Radia%C8%9Bie_electromagnetic%C4%83" title="Radiație electromagnetică">radiație electromagnetică</a> pierzând <a href="/wiki/Energie" title="Energie">energie</a>. Prin urmare, în timp, electronii nu ar mai avea suficientă energie pentru a se menține pe orbită și ar "cădea" pe nucleu. </p><p>De asemenea, <a href="/wiki/Frecven%C8%9B%C4%83" title="Frecvență">frecvența</a> radiației emise ar fi trebuit să ia orice valoare, în funcție de frecvența electronilor din atom, fapt infirmat de studiile experimentale asupra <a href="/w/index.php?title=Serie_spectral%C4%83&action=edit&redlink=1" class="new" title="Serie spectrală — pagină inexistentă">seriilor spectrale</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Importanță"><span id="Importan.C8.9B.C4.83"></span>Importanță</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Modelul_atomic_Rutherford&veaction=edit&section=3" title="Modifică secțiunea: Importanță" class="mw-editsection-visualeditor"><span>modificare</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Modelul_atomic_Rutherford&action=edit&section=3" title="Edit section's source code: Importanță"><span>modificare sursă</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/Fi%C8%99ier:US_Atomic_Energy_Commission_logo.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/7c/US_Atomic_Energy_Commission_logo.jpg/230px-US_Atomic_Energy_Commission_logo.jpg" decoding="async" width="230" height="182" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/7c/US_Atomic_Energy_Commission_logo.jpg/345px-US_Atomic_Energy_Commission_logo.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/7c/US_Atomic_Energy_Commission_logo.jpg/460px-US_Atomic_Energy_Commission_logo.jpg 2x" data-file-width="692" data-file-height="548" /></a><figcaption>Siglă a Comisiei pentru Energie Atomică, <a href="/wiki/SUA" class="mw-redirect" title="SUA">SUA</a></figcaption></figure> <p>Modelul lui Rutherford a introdus ideea unei <a href="/wiki/Atom#Structura_atomului" title="Atom">structuri a atomului</a> și a existenței unor particule componente, precum și posibilitatea separării acestora. Reprezentând punctul de plecare al <a href="/wiki/Modelul_atomic_Bohr" title="Modelul atomic Bohr">modelului Bohr</a>, a dus la separarea a două domenii, <a href="/wiki/Fizic%C4%83_nuclear%C4%83" title="Fizică nucleară">fizica nucleară</a>, ce studiază nucleul, și <a href="/wiki/Fizic%C4%83_atomic%C4%83_%C8%99i_molecular%C4%83" title="Fizică atomică și moleculară">fizica atomului</a>, ce studiază <a href="/wiki/Configura%C8%9Bie_electronic%C4%83" title="Configurație electronică">structura electronică</a> a atomului. </p><p>În ciuda deficiențelor, caracterul descriptiv al modelului a permis utilizarea ca <a href="/wiki/Simbol" title="Simbol">simbol</a> al atomului și energiei atomice. </p> <div class="mw-heading mw-heading2"><h2 id="Bibliografie">Bibliografie</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Modelul_atomic_Rutherford&veaction=edit&section=4" title="Modifică secțiunea: Bibliografie" class="mw-editsection-visualeditor"><span>modificare</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Modelul_atomic_Rutherford&action=edit&section=4" title="Edit section's source code: Bibliografie"><span>modificare sursă</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li>Emil Luca ș.a.: "Fizică generală", Ed. Didactică și pedagogică, București, 1981</li></ul> <div class="mw-heading mw-heading2"><h2 id="Legături_externe"><span id="Leg.C4.83turi_externe"></span>Legături externe</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Modelul_atomic_Rutherford&veaction=edit&section=5" title="Modifică secțiunea: Legături externe" class="mw-editsection-visualeditor"><span>modificare</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Modelul_atomic_Rutherford&action=edit&section=5" title="Edit section's source code: Legături externe"><span>modificare sursă</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><span style="border:solid 1px #44A; background-color:#EEF; font-family:monospace; color:#008; font-size:0.9em; padding:0px 4px 2px 4px; position:relative; bottom:0.2em; cursor:help;" title="Limba engleză">en</span> <a rel="nofollow" class="external text" href="http://www.britannica.com/eb/art-18079/The-Rutherford-atomic-model-Physicist-Ernest-Rutherford-envisioned-the-atom?articleTypeId=1">Modelul Rutherford - Online Encyclopedia Britannica</a></li> <li><span style="border:solid 1px #44A; background-color:#EEF; font-family:monospace; color:#008; font-size:0.9em; padding:0px 4px 2px 4px; position:relative; bottom:0.2em; cursor:help;" title="Limba engleză">en</span> <a rel="nofollow" class="external text" href="http://www.incois.gov.in/Tutor/science+society/lectures/illustrations/lecture28/rutherford.html">Ernest Rutherford</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20080414181958/http://www.incois.gov.in/Tutor/science+society/lectures/illustrations/lecture28/rutherford.html">Arhivat</a> în <time datetime="2008-04-14">14 aprilie 2008</time>, la <a href="/wiki/Wayback_Machine" class="mw-redirect" title="Wayback Machine">Wayback Machine</a>.</li></ul> <div class="mw-heading mw-heading2"><h2 id="Vezi_și"><span id="Vezi_.C8.99i"></span>Vezi și</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Modelul_atomic_Rutherford&veaction=edit&section=6" title="Modifică secțiunea: Vezi și" class="mw-editsection-visualeditor"><span>modificare</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Modelul_atomic_Rutherford&action=edit&section=6" title="Edit section's source code: Vezi și"><span>modificare sursă</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Atom" title="Atom">Atom</a></li> <li><a href="/wiki/Nucleu_atomic" title="Nucleu atomic">Nucleu atomic</a></li></ul> <table class="toccolours" style="text-align: center; margin: 0.5em auto; clear: both"> <tbody><tr> <th style="background:#ccccff"><div style="text-align:center;position:relative;white-space:nowrap;">Modele atomice<div class="noprint plainlinks" style="padding:0; font-size:xx-small; color:var(--color-base, #000); white-space:nowrap; position: absolute; right: 0; top: 0; margin: 0 5px;;"><a href="/wiki/Format:Modele_atomice" title="Format:Modele atomice"><span title="Vizualizare format" style=";">v</span></a> <span style="font-size:80%;">•</span> <a href="/w/index.php?title=Discu%C8%9Bie_Format:Modele_atomice&action=edit&redlink=1" class="new" title="Discuție Format:Modele atomice — pagină inexistentă"><span title="Discuție format" style=";">d</span></a> <span style="font-size:80%;">•</span> <a class="external text" href="https://ro.wikipedia.org/w/index.php?title=Format:Modele_atomice&action=edit"><span title="Acest format se poate modifica. Folosiți butonul de previzualizare înainte de a salva." style=";">m</span></a></div></div> </th></tr> <tr> <td style="font-size: 90%;"><a href="/wiki/Modelul_atomic_Thomson" title="Modelul atomic Thomson">Modelul atomic Thomson</a> | <a class="mw-selflink selflink">Modelul atomic Rutherford</a> | <a href="/wiki/Modelul_atomic_Bohr" title="Modelul atomic Bohr">Modelul atomic Bohr</a> | <a href="/w/index.php?title=Modelul_atomic_Bohr-Sommerfeld&action=edit&redlink=1" class="new" title="Modelul atomic Bohr-Sommerfeld — pagină inexistentă">Modelul atomic Bohr-Sommerfeld</a> | <a href="/w/index.php?title=Modelul_vectorial_al_atomului&action=edit&redlink=1" class="new" title="Modelul vectorial al atomului — pagină inexistentă">Modelul vectorial al atomului</a> </td></tr></tbody></table> <!-- NewPP limit report Parsed by mw‐web.eqiad.main‐bb65bb5d5‐bqppl Cached time: 20241029070215 Cache expiry: 2592000 Reduced expiry: false Complications: [show‐toc] CPU time usage: 0.046 seconds Real time usage: 0.083 seconds Preprocessor visited node count: 186/1000000 Post‐expand include size: 4395/2097152 bytes Template argument size: 177/2097152 bytes Highest expansion depth: 9/100 Expensive parser function count: 0/500 Unstrip recursion depth: 0/20 Unstrip post‐expand size: 0/5000000 bytes Lua time usage: 0.009/10.000 seconds Lua memory usage: 686959/52428800 bytes Number of Wikibase entities loaded: 0/400 --> <!-- Transclusion expansion time report (%,ms,calls,template) 100.00% 50.084 1 -total 57.60% 28.846 1 Format:Webarchive 32.63% 16.342 1 Format:Modele_atomice 12.36% 6.189 1 Format:Tnavbar-header 9.22% 4.618 2 Format:En_icon 6.34% 3.174 1 Format:Tnavbar 3.99% 2.000 1 Format:Indicație_limbă --> <!-- Saved in parser cache with key rowiki:pcache:idhash:196066-0!canonical and timestamp 20241029070215 and revision id 16129858. 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