{"id":26280,"date":"2025-06-19T11:52:27","date_gmt":"2025-06-19T11:52:27","guid":{"rendered":"https:\/\/gaviki.com\/blog\/?p=26280"},"modified":"2025-06-19T11:52:29","modified_gmt":"2025-06-19T11:52:29","slug":"draw-the-lewis-dot-structures-for-the-ammonium-ion-and-the-hydroxide-ion-and-predict-their-molecular-shapes","status":"publish","type":"post","link":"https:\/\/gaviki.com\/blog\/draw-the-lewis-dot-structures-for-the-ammonium-ion-and-the-hydroxide-ion-and-predict-their-molecular-shapes\/","title":{"rendered":"Draw the Lewis dot structures for the ammonium ion and the hydroxide ion and predict their molecular shapes."},"content":{"rendered":"\n<p>Draw the Lewis dot structures for the ammonium ion and the hydroxide ion and predict their molecular shapes.<\/p>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-light-green-cyan-color\">The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Lewis Dot Structures and Molecular Shapes<\/strong><\/h3>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>1. Ammonium Ion (NH\u2084\u207a)<\/strong><\/h4>\n\n\n\n<p><strong>Lewis Dot Structure:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Nitrogen (N) has 5 valence electrons.<\/li>\n\n\n\n<li>Each hydrogen (H) has 1 valence electron \u00d7 4 = 4 electrons.<\/li>\n\n\n\n<li>Total = 5 + 4 = 9 electrons.<\/li>\n\n\n\n<li>Since it is a <strong>positive ion (NH\u2084\u207a)<\/strong>, subtract 1 electron: 9 \u2013 1 = <strong>8 valence electrons<\/strong>.<\/li>\n<\/ul>\n\n\n\n<p><strong>Structure:<\/strong><br>Nitrogen is in the center, bonded to four hydrogen atoms with single bonds. All 8 valence electrons are used to form four N\u2013H bonds (2 electrons per bond). No lone pairs remain on nitrogen.<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">markdownCopyEdit<code>      H\n      |\n  H \u2013 N \u2013 H\n      |\n      H\n<\/code><\/pre>\n\n\n\n<p>Each bond contains a shared electron pair (2 electrons). The charge is shown in brackets as [NH\u2084]\u207a.<\/p>\n\n\n\n<p><strong>Molecular Shape:<\/strong><br>The ammonium ion has <strong>four bonding pairs<\/strong> and <strong>no lone pairs<\/strong> on the central nitrogen atom. According to VSEPR theory, this gives it a <strong>tetrahedral<\/strong> shape with <strong>bond angles of about 109.5\u00b0<\/strong>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>2. Hydroxide Ion (OH\u207b)<\/strong><\/h4>\n\n\n\n<p><strong>Lewis Dot Structure:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Oxygen (O) has 6 valence electrons.<\/li>\n\n\n\n<li>Hydrogen (H) has 1 valence electron.<\/li>\n\n\n\n<li>Total = 6 + 1 = 7 electrons.<\/li>\n\n\n\n<li>Since it is a <strong>negative ion (OH\u207b)<\/strong>, add 1 electron: 7 + 1 = <strong>8 valence electrons<\/strong>.<\/li>\n<\/ul>\n\n\n\n<p><strong>Structure:<\/strong><br>Oxygen is bonded to hydrogen with a single bond. The remaining 6 electrons go to three lone pairs on oxygen.<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">markdownCopyEdit<code>H \u2013 O\u207b\n     ..\n     ..\n<\/code><\/pre>\n\n\n\n<p>Oxygen has one single bond and three lone pairs.<\/p>\n\n\n\n<p><strong>Molecular Shape:<\/strong><br>The hydroxide ion has <strong>one bonding pair<\/strong> and <strong>three lone pairs<\/strong> on oxygen. According to VSEPR theory, the electron geometry is <strong>tetrahedral<\/strong>, but the molecular shape is <strong>bent<\/strong> or <strong>linear-like<\/strong> due to only one bonded atom. In practice, with only two atoms, its shape is considered <strong>linear<\/strong>, but with notable <strong>bond angle reduction<\/strong> due to lone pair repulsion.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Summary<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>NH\u2084\u207a:<\/strong> Tetrahedral shape, 109.5\u00b0 angles.<\/li>\n\n\n\n<li><strong>OH\u207b:<\/strong> Linear shape due to two atoms, but bent influence from lone pairs on oxygen.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"722\" height=\"1024\" src=\"https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner10-87.jpeg\" alt=\"\" class=\"wp-image-26281\" srcset=\"https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner10-87.jpeg 722w, https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner10-87-212x300.jpeg 212w\" sizes=\"auto, (max-width: 722px) 100vw, 722px\" \/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Draw the Lewis dot structures for the ammonium ion and the hydroxide ion and predict their molecular shapes. The Correct Answer and Explanation is: Lewis Dot Structures and Molecular Shapes 1. Ammonium Ion (NH\u2084\u207a) Lewis Dot Structure: Structure:Nitrogen is in the center, bonded to four hydrogen atoms with single bonds. All 8 valence electrons are [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-26280","post","type-post","status-publish","format-standard","hentry","category-quiz-questions"],"_links":{"self":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/26280","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/comments?post=26280"}],"version-history":[{"count":1,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/26280\/revisions"}],"predecessor-version":[{"id":26282,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/26280\/revisions\/26282"}],"wp:attachment":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/media?parent=26280"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/categories?post=26280"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/tags?post=26280"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}