{"id":255028,"date":"2025-07-12T19:05:55","date_gmt":"2025-07-12T19:05:55","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=255028"},"modified":"2025-07-12T19:06:59","modified_gmt":"2025-07-12T19:06:59","slug":"write-the-electron-configuration-for-a-neutral-atom-of-calcium-5","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/07\/12\/write-the-electron-configuration-for-a-neutral-atom-of-calcium-5\/","title":{"rendered":"Write the electron configuration for a neutral atom of calcium 5"},"content":{"rendered":"\n

Write the electron configuration for a neutral atom of calcium 5<\/p>\n\n\n\n

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

The electron configuration for a neutral atom of calcium (Ca), which has an atomic number of 20, is as follows:<\/p>\n\n\n\n

1s\u00b2 2s\u00b2 2p\u2076 3s\u00b2 3p\u2076 4s\u00b2<\/strong><\/p>\n\n\n\n

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

The atomic number of calcium is 20, meaning a neutral calcium atom has 20 electrons. The electrons are arranged in orbitals, starting with the lowest energy level. Here’s a step-by-step breakdown of the configuration:<\/p>\n\n\n\n

    \n
  1. 1s\u00b2<\/strong>: The first shell can hold a maximum of 2 electrons in the 1s orbital. These are the first two electrons, filling the 1s subshell.<\/li>\n\n\n\n
  2. 2s\u00b2<\/strong>: The second shell starts with the 2s orbital, which can hold 2 electrons. So, the next two electrons fill the 2s subshell.<\/li>\n\n\n\n
  3. 2p\u2076<\/strong>: After the 2s orbital, we move to the 2p orbital, which can hold a maximum of 6 electrons. These six electrons completely fill the 2p subshell.<\/li>\n\n\n\n
  4. 3s\u00b2<\/strong>: Next, we fill the 3s orbital with 2 electrons. The 3s orbital holds a maximum of 2 electrons.<\/li>\n\n\n\n
  5. 3p\u2076<\/strong>: The 3p orbital can hold up to 6 electrons. These six electrons fill the 3p subshell.<\/li>\n\n\n\n
  6. 4s\u00b2<\/strong>: Finally, we fill the 4s orbital, which holds 2 electrons. This completes the electron configuration for calcium.<\/li>\n<\/ol>\n\n\n\n

    Summary:<\/h3>\n\n\n\n
      \n
    • The 1st energy level (K shell) holds 2 electrons.<\/li>\n\n\n\n
    • The 2nd energy level (L shell) holds 8 electrons (2 in 2s and 6 in 2p).<\/li>\n\n\n\n
    • The 3rd energy level (M shell) holds 8 electrons (2 in 3s and 6 in 3p).<\/li>\n\n\n\n
    • The 4th energy level (N shell) holds 2 electrons (in the 4s orbital).<\/li>\n<\/ul>\n\n\n\n

      Therefore, the complete electron configuration for a neutral calcium atom is 1s\u00b2 2s\u00b2 2p\u2076 3s\u00b2 3p\u2076 4s\u00b2<\/strong>.<\/p>\n\n\n\n

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

      Write the electron configuration for a neutral atom of calcium 5 The Correct Answer and Explanation is: The electron configuration for a neutral atom of calcium (Ca), which has an atomic number of 20, is as follows: 1s\u00b2 2s\u00b2 2p\u2076 3s\u00b2 3p\u2076 4s\u00b2 Explanation: The atomic number of calcium is 20, meaning a neutral calcium […]<\/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-255028","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/255028","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=255028"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/255028\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=255028"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=255028"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=255028"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}