{"id":231094,"date":"2025-06-10T12:46:38","date_gmt":"2025-06-10T12:46:38","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=231094"},"modified":"2025-06-10T12:46:40","modified_gmt":"2025-06-10T12:46:40","slug":"the-condensed-electron-configuration-of-manganese-element-25-is-ar3d54s2-ne3s23p5-ar3d54s2-ne3s23p6-ar3d54s2-ne3s23p9","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/06\/10\/the-condensed-electron-configuration-of-manganese-element-25-is-ar3d54s2-ne3s23p5-ar3d54s2-ne3s23p6-ar3d54s2-ne3s23p9\/","title":{"rendered":"The condensed electron configuration of manganese, element 25, is [Ar]3d^54s^2 [Ne]3s^23p^5 [Ar]3d^54s^2 [Ne]3s^23p^6 [Ar]3d^54s^2 [Ne]3s^23p^9."},"content":{"rendered":"\n

The condensed electron configuration of manganese, element 25, is [Ar]3d^54s^2 [Ne]3s^23p^5 [Ar]3d^54s^2 [Ne]3s^23p^6 [Ar]3d^54s^2 [Ne]3s^23p^9.<\/p>\n\n\n\n

The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n

The condensed electron configuration of manganese (Mn), element 25, is [Ar] 3d\u2075 4s\u00b2<\/strong>.<\/p>\n\n\n\n

Explanation <\/h3>\n\n\n\n

Manganese is a transition metal with atomic number 25, meaning it has 25 electrons. To write its electron configuration, we follow the aufbau principle, which dictates the order in which orbitals are filled.<\/p>\n\n\n\n

The noble gas argon ([Ar])<\/strong>, with atomic number 18, represents the core configuration. Beyond argon, the remaining seven electrons occupy the 3d<\/strong> and 4s<\/strong> orbitals.<\/p>\n\n\n\n

    \n
  1. 4s orbital filling:<\/strong> After [Ar], the 4s orbital fills first with 2 electrons<\/strong> (4s\u00b2). The 4s orbital is lower in energy than the 3d orbital initially.<\/li>\n\n\n\n
  2. 3d orbital filling:<\/strong> The next five electrons occupy the 3d orbital, yielding 3d\u2075<\/strong>. This configuration is energetically favorable due to half-filled stability.<\/li>\n<\/ol>\n\n\n\n

    The incorrect electron configuration in your original message includes noble gas cores that do not match manganese\u2019s atomic structure. Specifically, it incorrectly lists [Ne] and repeats unnecessary configurations.<\/p>\n\n\n\n

    Why [Ar] 3d\u2075 4s\u00b2 is correct:<\/h3>\n\n\n\n
      \n
    1. Noble Gas Core ([Ar])<\/strong> Instead of listing [Ne], which represents only 10 electrons, [Ar] is correct because it accounts for the first 18 electrons.<\/li>\n\n\n\n
    2. Half-Filled Stability of d-Orbitals<\/strong> The 3d\u2075 configuration<\/strong> is stable because half-filled d orbitals exhibit increased exchange energy and symmetry benefits.<\/li>\n\n\n\n
    3. Transition Metal Characteristics<\/strong> Manganese is classified as a transition metal due to its partially filled d subshell. Unlike main-group elements, transition metals sometimes exhibit variations in their electron configurations due to bonding influences.<\/li>\n<\/ol>\n\n\n\n
      \"\"<\/figure>\n","protected":false},"excerpt":{"rendered":"

      The condensed electron configuration of manganese, element 25, is [Ar]3d^54s^2 [Ne]3s^23p^5 [Ar]3d^54s^2 [Ne]3s^23p^6 [Ar]3d^54s^2 [Ne]3s^23p^9. The Correct Answer and Explanation is: The condensed electron configuration of manganese (Mn), element 25, is [Ar] 3d\u2075 4s\u00b2. Explanation Manganese is a transition metal with atomic number 25, meaning it has 25 electrons. To write its electron configuration, we […]<\/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-231094","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/231094","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=231094"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/231094\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=231094"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=231094"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=231094"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}