{"id":219663,"date":"2025-05-26T13:21:25","date_gmt":"2025-05-26T13:21:25","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=219663"},"modified":"2025-05-26T13:21:27","modified_gmt":"2025-05-26T13:21:27","slug":"write-the-ground-state-electron-configuration-for-a-neutral-atom-of-each-element","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/05\/26\/write-the-ground-state-electron-configuration-for-a-neutral-atom-of-each-element\/","title":{"rendered":"Write the ground-state electron configuration for a neutral atom of each element"},"content":{"rendered":"\n

Write the ground-state electron configuration for a neutral atom of each element: vanadium x 6? Chromium<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

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

Here are the correct ground-state electron configurations<\/strong> for each element:<\/p>\n\n\n\n

\n\n\n\n

\u2705 Vanadium (V, Atomic Number 23)<\/strong><\/h3>\n\n\n\n

Electron Configuration:<\/strong>
1s\u00b2 2s\u00b2 2p\u2076 3s\u00b2 3p\u2076 4s\u00b2 3d\u00b3<\/strong>
Or using noble gas shorthand:
[Ar] 4s\u00b2 3d\u00b3<\/strong><\/p>\n\n\n\n

\n\n\n\n

\u2705 Chromium (Cr, Atomic Number 24)<\/strong><\/h3>\n\n\n\n

Electron Configuration:<\/strong>
1s\u00b2 2s\u00b2 2p\u2076 3s\u00b2 3p\u2076 4s\u00b9 3d\u2075<\/strong>
Or using noble gas shorthand:
[Ar] 4s\u00b9 3d\u2075<\/strong><\/p>\n\n\n\n

\n\n\n\n

\ud83d\udca1 Explanation (Approx. 300 words):<\/h3>\n\n\n\n

Electron configurations describe how electrons are distributed in an atom\u2019s orbitals. The goal is to follow the Aufbau principle<\/strong> (filling lower-energy orbitals first), Pauli exclusion principle<\/strong>, and Hund\u2019s rule<\/strong> for the most stable arrangement.<\/p>\n\n\n\n

For vanadium (V)<\/strong>, which has 23 electrons, the configuration proceeds normally by filling up orbitals in order of increasing energy levels: 1s \u2192 2s \u2192 2p \u2192 3s \u2192 3p \u2192 4s \u2192 3d. So, the electrons are arranged as:<\/p>\n\n\n\n

    \n
  • 2 in 1s<\/li>\n\n\n\n
  • 2 in 2s<\/li>\n\n\n\n
  • 6 in 2p<\/li>\n\n\n\n
  • 2 in 3s<\/li>\n\n\n\n
  • 6 in 3p<\/li>\n\n\n\n
  • 2 in 4s<\/li>\n\n\n\n
  • 3 in 3d<\/li>\n<\/ul>\n\n\n\n

    Thus, V is written as [Ar] 4s\u00b2 3d\u00b3<\/strong>.<\/p>\n\n\n\n

    Chromium (Cr)<\/strong>, with 24 electrons, is an exception<\/strong> to the expected pattern. One might expect [Ar] 4s\u00b2 3d\u2074<\/strong>, but this is not<\/strong> the most stable configuration. Instead, chromium “borrows” one electron from the 4s orbital and places it in the 3d orbital, forming [Ar] 4s\u00b9 3d\u2075<\/strong>.<\/p>\n\n\n\n

    Why this happens: Half-filled (like d\u2075) and fully-filled (like d\u00b9\u2070) subshells offer extra stability<\/strong> due to electron symmetry and exchange energy. So, 4s\u00b9 3d\u2075<\/strong> is energetically more favorable than 4s\u00b2 3d\u2074<\/strong>.<\/p>\n\n\n\n

    These configurations help in predicting chemical behavior, bonding, magnetic properties, and placement in the periodic table.<\/p>\n\n\n\n

    \"\"<\/figure>\n","protected":false},"excerpt":{"rendered":"

    Write the ground-state electron configuration for a neutral atom of each element: vanadium x 6? Chromium The Correct Answer and Explanation is: Here are the correct ground-state electron configurations for each element: \u2705 Vanadium (V, Atomic Number 23) Electron Configuration:1s\u00b2 2s\u00b2 2p\u2076 3s\u00b2 3p\u2076 4s\u00b2 3d\u00b3Or using noble gas shorthand:[Ar] 4s\u00b2 3d\u00b3 \u2705 Chromium (Cr, […]<\/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-219663","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/219663","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=219663"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/219663\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=219663"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=219663"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=219663"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}