{"id":218317,"date":"2025-05-23T15:12:09","date_gmt":"2025-05-23T15:12:09","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=218317"},"modified":"2025-05-23T15:12:11","modified_gmt":"2025-05-23T15:12:11","slug":"which-is-the-correct-lewis-structure-for-magnesium-bromide","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/05\/23\/which-is-the-correct-lewis-structure-for-magnesium-bromide\/","title":{"rendered":"Which is the correct Lewis structure for magnesium bromide"},"content":{"rendered":"\n

Which is the correct Lewis structure for magnesium bromide? a) 2 Mg\u00c2\u00b2+ [Br] c) Mg\u00c2\u00b2+2 [Br] b) Mg:Br: d) :Mg:Br:<\/p>\n\n\n\n

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

The correct Lewis structure for magnesium bromide (MgBr\u2082)<\/strong> is:<\/p>\n\n\n\n

c) Mg\u00b2\u207a 2[B<\/strong><\/p>\n\n\n\n

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

Magnesium bromide is an ionic compound<\/strong> composed of magnesium (Mg)<\/strong> and bromine (Br)<\/strong> atoms. To determine its correct Lewis structure, we must consider the nature of the bonding and the electron configurations of the involved elements.<\/p>\n\n\n\n

1. Ionic Nature of MgBr\u2082:<\/strong><\/h4>\n\n\n\n

Magnesium is a group 2<\/strong> element with an electron configuration of [Ne]3s\u00b2<\/strong>. It has two valence electrons<\/strong>, which it readily loses<\/strong> to achieve a stable noble gas configuration<\/strong> like neon. Losing two electrons results in a Mg\u00b2\u207a<\/strong> cation.<\/p>\n\n\n\n

Bromine is a group 17 (halogen)<\/strong> element with seven valence electrons. It needs one more electron<\/strong> to complete its octet<\/strong>. Each bromine atom gains one electron to become a Br\u207b<\/strong> anion.<\/p>\n\n\n\n

2. Formation of MgBr\u2082:<\/strong><\/h4>\n\n\n\n

For charge balance:<\/p>\n\n\n\n

    \n
  • One Mg atom loses 2 electrons<\/strong> to become Mg\u00b2\u207a<\/strong><\/li>\n\n\n\n
  • Two Br atoms each gain 1 electron<\/strong> to become 2Br\u207b<\/strong><\/li>\n<\/ul>\n\n\n\n

    The resulting compound is electrically neutral:
    Mg\u00b2\u207a + 2Br\u207b \u2192 MgBr\u2082<\/strong><\/p>\n\n\n\n

    3. Lewis Structure Representation:<\/strong><\/h4>\n\n\n\n

    In ionic compounds, the Lewis structure shows ions<\/strong> with full outer shells:<\/p>\n\n\n\n

      \n
    • Mg\u00b2\u207a<\/strong> is represented without valence electrons (it lost them).<\/li>\n\n\n\n
    • Br\u207b<\/strong> ions are shown with full octets (eight electrons around each).<\/li>\n<\/ul>\n\n\n\n

      Therefore, the correct Lewis structure is:
      Mg\u00b2\u207a 2[Br\u207b]<\/strong>
      This matches option c)<\/strong>, which shows the metal cation and two halide anions correctly.<\/p>\n\n\n\n

      4. Why Other Options Are Incorrect:<\/strong><\/h4>\n\n\n\n
        \n
      • a)<\/strong> “2 Mg\u00b2\u207a [Br]” implies two magnesium ions for one bromide\u2014incorrect stoichiometry.<\/li>\n\n\n\n
      • b)<\/strong> “Mg:Br:” suggests covalent bonding\u2014incorrect for an ionic compound.<\/li>\n\n\n\n
      • d)<\/strong> “:Mg:Br:” also suggests shared electrons (covalent)\u2014not appropriate for MgBr\u2082.<\/li>\n<\/ul>\n\n\n\n
        \n\n\n\n

        Thus, option c) Mg\u00b2\u207a 2[Br\u207b]<\/strong> is correct.<\/p>\n\n\n\n

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

        Which is the correct Lewis structure for magnesium bromide? a) 2 Mg\u00c2\u00b2+ [Br] c) Mg\u00c2\u00b2+2 [Br] b) Mg:Br: d) :Mg:Br: The Correct Answer and Explanation is: The correct Lewis structure for magnesium bromide (MgBr\u2082) is: c) Mg\u00b2\u207a 2[B Magnesium bromide is an ionic compound composed of magnesium (Mg) and bromine (Br) atoms. To determine its […]<\/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-218317","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/218317","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=218317"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/218317\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=218317"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=218317"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=218317"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}