{"id":198517,"date":"2025-03-10T06:21:10","date_gmt":"2025-03-10T06:21:10","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=198517"},"modified":"2025-03-10T06:21:12","modified_gmt":"2025-03-10T06:21:12","slug":"ammonia-nh3-has-electron-pair-geometry-and-respectively","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/03\/10\/ammonia-nh3-has-electron-pair-geometry-and-respectively\/","title":{"rendered":"Ammonia (NH3) Has Electron Pair Geometry And Respectively"},"content":{"rendered":"\n

Ammonia (NH3) Has Electron Pair Geometry And Respectively. <\/p>\n\n\n\n

A. Tetrahedral, Trigonal Pyramidal <\/p>\n\n\n\n

B. Octahedral, T-Shaped <\/p>\n\n\n\n

C. Trigonal Bipyramidal, T-Shaped <\/p>\n\n\n\n

D. Octahedral, Trigonal Planar <\/p>\n\n\n\n

E. T-Shaped, Trigonal Planar<\/p>\n\n\n\n

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

The correct answer is:<\/p>\n\n\n\n

A. Tetrahedral, Trigonal Pyramidal<\/strong><\/p>\n\n\n\n

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

Ammonia (NH\u2083) has a central nitrogen atom (N)<\/strong> bonded to three hydrogen atoms (H). To determine its electron pair geometry<\/strong> and molecular geometry<\/strong>, we use VSEPR (Valence Shell Electron Pair Repulsion) theory<\/strong>.<\/p>\n\n\n\n

1. Electron Pair Geometry: Tetrahedral<\/strong><\/h4>\n\n\n\n
    \n
  • The nitrogen atom has 5 valence electrons<\/strong>.<\/li>\n\n\n\n
  • Three of these electrons form single bonds with hydrogen atoms<\/strong>.<\/li>\n\n\n\n
  • The remaining two electrons<\/strong> form a lone pair<\/strong>.<\/li>\n\n\n\n
  • This makes a total of four electron domains<\/strong> (three bond pairs and one lone pair).<\/li>\n\n\n\n
  • According to VSEPR theory, four electron pairs<\/strong> around a central atom adopt a tetrahedral<\/strong> arrangement to minimize repulsions.<\/li>\n<\/ul>\n\n\n\n

    2. Molecular Geometry: Trigonal Pyramidal<\/strong><\/h4>\n\n\n\n
      \n
    • Even though the electron pair geometry is tetrahedral<\/strong>, the actual shape<\/strong> (molecular geometry) is determined only by the positions of atoms<\/strong>, not lone pairs.<\/li>\n\n\n\n
    • The three hydrogen atoms<\/strong> form a base of a pyramid<\/strong>, with the nitrogen atom at the top<\/strong>.<\/li>\n\n\n\n
    • The lone pair on nitrogen<\/strong> pushes the bonded hydrogen atoms slightly downward, resulting in a trigonal pyramidal<\/strong> shape.<\/li>\n<\/ul>\n\n\n\n

      Bond Angles & Effects of Lone Pairs:<\/strong><\/h4>\n\n\n\n
        \n
      • In an ideal tetrahedral geometry<\/strong>, the bond angle is 109.5\u00b0<\/strong>.<\/li>\n\n\n\n
      • However, due to lone pair-bond pair repulsion<\/strong> being stronger than bond-bond repulsion, the H-N-H bond angle reduces to approximately 107\u00b0<\/strong>.<\/li>\n<\/ul>\n\n\n\n

        Conclusion:<\/strong><\/h4>\n\n\n\n
          \n
        • Electron pair geometry:<\/strong> Tetrahedral<\/strong> (based on all four electron groups).<\/li>\n\n\n\n
        • Molecular geometry:<\/strong> Trigonal Pyramidal<\/strong> (based on only atoms).<\/li>\n<\/ul>\n\n\n\n

          NH\u2083 has a tetrahedral electron pair geometry<\/strong> but a trigonal pyramidal molecular shape<\/strong>.<\/p>\n","protected":false},"excerpt":{"rendered":"

          Ammonia (NH3) Has Electron Pair Geometry And Respectively. A. Tetrahedral, Trigonal Pyramidal B. Octahedral, T-Shaped C. Trigonal Bipyramidal, T-Shaped D. Octahedral, Trigonal Planar E. T-Shaped, Trigonal Planar The correct answer and explanation is : The correct answer is: A. Tetrahedral, Trigonal Pyramidal Explanation: Ammonia (NH\u2083) has a central nitrogen atom (N) bonded to three hydrogen […]<\/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-198517","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/198517","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=198517"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/198517\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=198517"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=198517"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=198517"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}