{"id":258051,"date":"2025-07-17T21:04:57","date_gmt":"2025-07-17T21:04:57","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=258051"},"modified":"2025-07-17T21:04:59","modified_gmt":"2025-07-17T21:04:59","slug":"how-many-unpaired-electrons-are-in-a-ground-state-magnesium-atom","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/07\/17\/how-many-unpaired-electrons-are-in-a-ground-state-magnesium-atom\/","title":{"rendered":"How many unpaired electrons are in a ground state Magnesium atom"},"content":{"rendered":"\n<p>How many unpaired electrons are in a ground state Magnesium atom? 0 2 6 4<\/p>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-0-color\">The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n<p>The correct answer is <strong>0<\/strong>.<\/p>\n\n\n\n<p>Here&#8217;s why:<\/p>\n\n\n\n<p>A <strong>ground state magnesium atom<\/strong> has an atomic number of 12, meaning it has 12 electrons. The electron configuration for magnesium (Mg) is:<\/p>\n\n\n\n<p>1s2\u20092s2\u20092p6\u20093s21s^2 \\, 2s^2 \\, 2p^6 \\, 3s^21s22s22p63s2<\/p>\n\n\n\n<p>This configuration can be explained as follows:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The first energy level (1s) holds 2 electrons.<\/li>\n\n\n\n<li>The second energy level (2s and 2p) holds 8 electrons (2 in the 2s orbital and 6 in the 2p orbitals).<\/li>\n\n\n\n<li>The third energy level (3s) holds 2 electrons.<\/li>\n<\/ul>\n\n\n\n<p>In the ground state, electrons fill orbitals in the order of increasing energy, and each orbital can hold a maximum of two electrons with opposite spins.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The 1s and 2s orbitals are fully filled, and the 2p orbital is also fully filled with 6 electrons.<\/li>\n\n\n\n<li>The 3s orbital is fully filled with 2 electrons.<\/li>\n<\/ul>\n\n\n\n<p>Since all the orbitals in the ground state are completely filled, <strong>there are no unpaired electrons<\/strong>.<\/p>\n\n\n\n<p>Unpaired electrons occur when an orbital contains just one electron, but in magnesium&#8217;s ground state, all orbitals are paired. Therefore, <strong>magnesium has 0 unpaired electrons in its ground state<\/strong>.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/learnexams.com\/blog\/wp-content\/uploads\/2025\/07\/learnexams-banner6-859.jpeg\" alt=\"\" class=\"wp-image-258052\"\/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>How many unpaired electrons are in a ground state Magnesium atom? 0 2 6 4 The Correct Answer and Explanation is: The correct answer is 0. Here&#8217;s why: A ground state magnesium atom has an atomic number of 12, meaning it has 12 electrons. The electron configuration for magnesium (Mg) is: 1s2\u20092s2\u20092p6\u20093s21s^2 \\, 2s^2 \\, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-258051","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/258051","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=258051"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/258051\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=258051"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=258051"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=258051"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}