{"id":202832,"date":"2025-03-18T06:43:16","date_gmt":"2025-03-18T06:43:16","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=202832"},"modified":"2025-03-18T06:43:19","modified_gmt":"2025-03-18T06:43:19","slug":"write-the-ground-state-electron-configuration-for-an-arsenic-atom","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/03\/18\/write-the-ground-state-electron-configuration-for-an-arsenic-atom\/","title":{"rendered":"Write The Ground State Electron Configuration For An Arsenic Atom"},"content":{"rendered":"\n

Write The Ground State Electron Configuration For An Arsenic Atom, Showing The Number Of Electrons In Each Subshell<\/p>\n\n\n\n

The correct answer and explanation is :<\/strong><\/mark><\/p>\n\n\n\n

The ground-state electron configuration for an arsenic (As) atom, which has an atomic number of 33<\/strong>, is:<\/p>\n\n\n\n

1s\u00b2 2s\u00b2 2p\u2076 3s\u00b2 3p\u2076 4s\u00b2 3d\u00b9\u2070 4p\u00b3<\/strong><\/p>\n\n\n\n

Explanation (300 Words)<\/h3>\n\n\n\n

Arsenic (As) is an element in Group 15<\/strong> (or VA<\/strong>) of the periodic table and is classified as a metalloid. To determine its ground-state electron configuration, we follow the Aufbau principle<\/strong>, which states that electrons occupy orbitals in order of increasing energy.<\/p>\n\n\n\n

Step 1: Identify the Number of Electrons<\/strong><\/h4>\n\n\n\n

Since arsenic has an atomic number of 33<\/strong>, it has 33 electrons<\/strong> in a neutral state.<\/p>\n\n\n\n

Step 2: Fill the Electron Orbitals in Order of Energy Levels<\/strong><\/h4>\n\n\n\n

Electrons fill the orbitals according to the following sequence:<\/p>\n\n\n\n

    \n
  1. 1s\u00b2<\/strong> \u2192 The 1s<\/strong> orbital can hold 2<\/strong> electrons.<\/li>\n\n\n\n
  2. 2s\u00b2<\/strong> \u2192 The 2s<\/strong> orbital can hold 2<\/strong> electrons.<\/li>\n\n\n\n
  3. 2p\u2076<\/strong> \u2192 The 2p<\/strong> orbital can hold 6<\/strong> electrons.<\/li>\n\n\n\n
  4. 3s\u00b2<\/strong> \u2192 The 3s<\/strong> orbital can hold 2<\/strong> electrons.<\/li>\n\n\n\n
  5. 3p\u2076<\/strong> \u2192 The 3p<\/strong> orbital can hold 6<\/strong> electrons.<\/li>\n\n\n\n
  6. 4s\u00b2<\/strong> \u2192 The 4s<\/strong> orbital can hold 2<\/strong> electrons.<\/li>\n\n\n\n
  7. 3d\u00b9\u2070<\/strong> \u2192 The 3d<\/strong> orbital can hold 10<\/strong> electrons.<\/li>\n\n\n\n
  8. 4p\u00b3<\/strong> \u2192 The 4p<\/strong> orbital can hold 3<\/strong> electrons.<\/li>\n<\/ol>\n\n\n\n

    Step 3: Verify the Total Number of Electrons<\/strong><\/h4>\n\n\n\n

    Adding up all the electrons:
    2 (1s) + 2 (2s) + 6 (2p) + 2 (3s) + 6 (3p) + 2 (4s) + 10 (3d) + 3 (4p) = 33 electrons<\/strong>, which is correct.<\/p>\n\n\n\n

    Why 4p\u00b3?<\/strong><\/h3>\n\n\n\n

    Arsenic belongs to Group 15<\/strong>, meaning it has three valence electrons<\/strong> in the p<\/strong> subshell (4p\u00b3). These electrons play a key role in arsenic’s chemical behavior, including bonding and reactivity.<\/p>\n\n\n\n

    Thus, the correct ground-state electron configuration<\/strong> of As<\/strong> is:
    1s\u00b2 2s\u00b2 2p\u2076 3s\u00b2 3p\u2076 4s\u00b2 3d\u00b9\u2070 4p\u00b3<\/strong>.<\/p>\n","protected":false},"excerpt":{"rendered":"

    Write The Ground State Electron Configuration For An Arsenic Atom, Showing The Number Of Electrons In Each Subshell The correct answer and explanation is : The ground-state electron configuration for an arsenic (As) atom, which has an atomic number of 33, is: 1s\u00b2 2s\u00b2 2p\u2076 3s\u00b2 3p\u2076 4s\u00b2 3d\u00b9\u2070 4p\u00b3 Explanation (300 Words) Arsenic (As) […]<\/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-202832","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/202832","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=202832"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/202832\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=202832"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=202832"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=202832"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}