{"id":25439,"date":"2025-06-19T02:44:38","date_gmt":"2025-06-19T02:44:38","guid":{"rendered":"https:\/\/gaviki.com\/blog\/?p=25439"},"modified":"2025-06-19T02:44:39","modified_gmt":"2025-06-19T02:44:39","slug":"what-is-the-electron-configuration-of-a-mn-atom-in-the-ground-state","status":"publish","type":"post","link":"https:\/\/gaviki.com\/blog\/what-is-the-electron-configuration-of-a-mn-atom-in-the-ground-state\/","title":{"rendered":"What is the electron configuration of a Mn atom in the ground state"},"content":{"rendered":"\n<p>What is the electron configuration of a Mn atom in the ground state? A) 15252p6382 B) 18282p6383p6453d C) 152522p63523p64513d4p1 D) 1522522p6353pf3d<\/p>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-green-cyan-color\">The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n<p>The correct answer is: <strong>B) 1s\u00b2 2s\u00b2 2p\u2076 3s\u00b2 3p\u2076 4s\u00b2 3d\u2075<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Explanation<\/h3>\n\n\n\n<p>Manganese (Mn) is a transition metal with atomic number <strong>25<\/strong>, which means it has <strong>25 electrons<\/strong> in its neutral, ground state. To write its electron configuration, we fill the atomic orbitals in order of increasing energy using the <strong>Aufbau principle<\/strong>, <strong>Pauli exclusion principle<\/strong>, and <strong>Hund\u2019s rule<\/strong>.<\/p>\n\n\n\n<p>The general order of filling orbitals by energy is:<\/p>\n\n\n\n<p>1s \u2192 2s \u2192 2p \u2192 3s \u2192 3p \u2192 4s \u2192 3d \u2192 4p&#8230;<\/p>\n\n\n\n<p>Now, let us fill in the electrons for Mn:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>1s\u00b2<\/strong>: 2 electrons \u2192 total = 2<\/li>\n\n\n\n<li><strong>2s\u00b2<\/strong>: 2 electrons \u2192 total = 4<\/li>\n\n\n\n<li><strong>2p\u2076<\/strong>: 6 electrons \u2192 total = 10<\/li>\n\n\n\n<li><strong>3s\u00b2<\/strong>: 2 electrons \u2192 total = 12<\/li>\n\n\n\n<li><strong>3p\u2076<\/strong>: 6 electrons \u2192 total = 18<\/li>\n\n\n\n<li><strong>4s\u00b2<\/strong>: 2 electrons \u2192 total = 20<\/li>\n\n\n\n<li><strong>3d\u2075<\/strong>: 5 electrons \u2192 total = 25<\/li>\n<\/ul>\n\n\n\n<p>This completes the full 25 electrons, so the electron configuration is:<br><strong>1s\u00b2 2s\u00b2 2p\u2076 3s\u00b2 3p\u2076 4s\u00b2 3d\u2075<\/strong><\/p>\n\n\n\n<p>We place the electrons in the <strong>4s<\/strong> orbital before the <strong>3d<\/strong> because the 4s has lower energy when empty or partially filled. However, once filled, 3d becomes lower in energy, which explains why in ion formation, Mn loses the 4s electrons first.<\/p>\n\n\n\n<p>Looking at the choices:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A is missing orbitals and not well structured.<\/li>\n\n\n\n<li><strong>B is correct<\/strong>: It clearly matches the proper order and count.<\/li>\n\n\n\n<li>C and D have wrong subscripts and incorrect placement of orbitals.<\/li>\n<\/ul>\n\n\n\n<p>Therefore, <strong>option B<\/strong> is the correct and complete electron configuration for a ground-state manganese atom.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner5-25.jpeg\" alt=\"\" class=\"wp-image-25440\" srcset=\"https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner5-25.jpeg 1024w, https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner5-25-300x300.jpeg 300w, https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner5-25-150x150.jpeg 150w, https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner5-25-768x768.jpeg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>What is the electron configuration of a Mn atom in the ground state? A) 15252p6382 B) 18282p6383p6453d C) 152522p63523p64513d4p1 D) 1522522p6353pf3d The Correct Answer and Explanation is: The correct answer is: B) 1s\u00b2 2s\u00b2 2p\u2076 3s\u00b2 3p\u2076 4s\u00b2 3d\u2075 Explanation Manganese (Mn) is a transition metal with atomic number 25, which means it has 25 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-25439","post","type-post","status-publish","format-standard","hentry","category-quiz-questions"],"_links":{"self":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/25439","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/comments?post=25439"}],"version-history":[{"count":1,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/25439\/revisions"}],"predecessor-version":[{"id":25441,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/25439\/revisions\/25441"}],"wp:attachment":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/media?parent=25439"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/categories?post=25439"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/tags?post=25439"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}