{"id":148957,"date":"2024-02-27T18:44:35","date_gmt":"2024-02-27T13:14:35","guid":{"rendered":"https:\/\/www.mapsofindia.com\/my-india\/?p=148957"},"modified":"2024-02-27T18:44:35","modified_gmt":"2024-02-27T13:14:35","slug":"why-is-first-ionization-enthalpy-of-chromium-lower-than-that-of-zn","status":"publish","type":"post","link":"https:\/\/www.mapsofindia.com\/my-india\/quiz\/why-is-first-ionization-enthalpy-of-chromium-lower-than-that-of-zn","title":{"rendered":"Why is first ionization enthalpy of chromium lower than that of Zn ?"},"content":{"rendered":"<h3>Why is first ionization enthalpy of chromium lower than that of Zn ?<\/h3>\n<h3>Ans.<\/h3>\n<h3>The first ionization enthalpy of chromium (Cr) is lower than that of zinc (Zn) due to the electronic configuration and the stability associated with half-filled and fully-filled orbitals.<\/h3>\n<h3>Chromium has the electronic configuration [Ar] 3d^5 4s^1, while zinc has the electronic configuration [Ar] 3d^10 4s^2.<\/h3>\n<h3>In the case of chromium, removing one electron would result in a configuration with a half-filled <span class=\"math math-inline\"><span class=\"katex\"><span class=\"katex-mathml\">3\ufffd<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">3<\/span><span class=\"mord mathnormal\">d<\/span><\/span><\/span><\/span><\/span> subshell, which is a relatively stable configuration due to the exchange energy associated with electron-electron repulsions. The removal of an electron from chromium leaves it with the configuration [Ar] 3d^5, which is more stable than the configuration before ionization.<\/h3>\n<h3>On the other hand, zinc has a completely filled <span class=\"math math-inline\"><span class=\"katex\"><span class=\"katex-mathml\">3\ufffd<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">3<\/span><span class=\"mord mathnormal\">d<\/span><\/span><\/span><\/span><\/span> subshell. Removing an electron from zinc would disrupt this fully filled subshell, resulting in a less stable configuration. The removal of an electron from zinc leaves it with the configuration [Ar] 3d^10 4s^1, which is less stable compared to its initial configuration.<\/h3>\n<h3>Due to the stability associated with the half-filled <span class=\"math math-inline\"><span class=\"katex\"><span class=\"katex-mathml\">3\ufffd<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">3<\/span><span class=\"mord mathnormal\">d<\/span><\/span><\/span><\/span><\/span> subshell in chromium, it requires less energy to remove an electron compared to zinc. Therefore, the first ionization enthalpy of chromium is lower than that of zinc.<\/h3>\n","protected":false},"excerpt":{"rendered":"<p>Why is first ionization enthalpy of chromium lower than that of Zn ? Ans. The first ionization enthalpy of chromium (Cr) is lower than that of zinc (Zn) due to the electronic configuration and the stability associated with half-filled and fully-filled orbitals. Chromium has the electronic configuration [Ar] 3d^5 4s^1, while zinc has the electronic [&hellip;]<\/p>\n","protected":false},"author":21830,"featured_media":114041,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12119],"tags":[],"class_list":{"0":"post-148957","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-quiz"},"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.mapsofindia.com\/my-india\/wp-json\/wp\/v2\/posts\/148957","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.mapsofindia.com\/my-india\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.mapsofindia.com\/my-india\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.mapsofindia.com\/my-india\/wp-json\/wp\/v2\/users\/21830"}],"replies":[{"embeddable":true,"href":"https:\/\/www.mapsofindia.com\/my-india\/wp-json\/wp\/v2\/comments?post=148957"}],"version-history":[{"count":1,"href":"https:\/\/www.mapsofindia.com\/my-india\/wp-json\/wp\/v2\/posts\/148957\/revisions"}],"predecessor-version":[{"id":148958,"href":"https:\/\/www.mapsofindia.com\/my-india\/wp-json\/wp\/v2\/posts\/148957\/revisions\/148958"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.mapsofindia.com\/my-india\/wp-json\/wp\/v2\/media\/114041"}],"wp:attachment":[{"href":"https:\/\/www.mapsofindia.com\/my-india\/wp-json\/wp\/v2\/media?parent=148957"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.mapsofindia.com\/my-india\/wp-json\/wp\/v2\/categories?post=148957"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.mapsofindia.com\/my-india\/wp-json\/wp\/v2\/tags?post=148957"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}