{"id":235645,"date":"2025-06-15T14:43:49","date_gmt":"2025-06-15T14:43:49","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=235645"},"modified":"2025-06-15T14:43:50","modified_gmt":"2025-06-15T14:43:50","slug":"the-formula-for-the-compound-formed-from-the-polyatomic-ions-nh4-and-po43-is-group-of-answer-choices-nh4po4-nh43po4-nh42po42-nh4po43","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/06\/15\/the-formula-for-the-compound-formed-from-the-polyatomic-ions-nh4-and-po43-is-group-of-answer-choices-nh4po4-nh43po4-nh42po42-nh4po43\/","title":{"rendered":"The formula for the compound formed from the polyatomic ions NH4+ and PO43- is Group of answer choices NH4PO4 (NH4)3PO4 (NH4)2(PO4)2 NH4(PO4)3"},"content":{"rendered":"\n<p>The formula for the compound formed from the polyatomic ions NH4+ and PO43- is Group of answer choices NH4PO4 (NH4)3PO4 (NH4)2(PO4)2 NH4(PO4)3<\/p>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-0-color\">The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n<p><strong>Correct Answer: (NH\u2084)\u2083PO\u2084<\/strong><\/p>\n\n\n\n<p>When determining the formula for a compound formed from polyatomic ions, the charges of the ions involved must be balanced. The ammonium ion (NH\u2084\u207a) carries a single positive charge (+1), while the phosphate ion (PO\u2084\u00b3\u207b) carries a triple negative charge (\u20133). For a neutral compound to form, the total positive and negative charges must cancel out.<\/p>\n\n\n\n<p>Each ammonium ion contributes +1. Three ammonium ions are needed to match the \u20133 charge from one phosphate ion. Multiplying the +1 charge of ammonium by three results in +3. This exactly offsets the \u20133 charge from one phosphate ion. Therefore, the correct stoichiometric ratio is 3 ammonium ions to 1 phosphate ion.<\/p>\n\n\n\n<p>To express this properly in a chemical formula, the ammonium ion must be enclosed in parentheses when more than one is present, to indicate that the whole polyatomic ion is repeated. The result is (NH\u2084)\u2083PO\u2084.<\/p>\n\n\n\n<p>The incorrect choices can be eliminated by examining their charge balance:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>NH\u2084PO\u2084<\/strong>: Contains only one NH\u2084\u207a, total charge +1; does not balance \u20133 from PO\u2084\u00b3\u207b.<\/li>\n\n\n\n<li><strong>(NH\u2084)\u2082(PO\u2084)\u2082<\/strong>: Contains 2 NH\u2084\u207a (+2) and 2 PO\u2084\u00b3\u207b (\u20136); overall charge \u20134, not neutral.<\/li>\n\n\n\n<li><strong>NH\u2084(PO\u2084)\u2083<\/strong>: Contains 1 NH\u2084\u207a (+1) and 3 PO\u2084\u00b3\u207b (\u20139); overall charge \u20138, not neutral.<\/li>\n<\/ul>\n\n\n\n<p>Only (NH\u2084)\u2083PO\u2084 achieves a total net charge of zero, fulfilling the requirement for a stable ionic compound. Proper chemical formulas rely on accurate balancing of ion charges to reflect the structure and stability of the resulting compound.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/learnexams.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner8-622.jpeg\" alt=\"\" class=\"wp-image-235646\"\/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>The formula for the compound formed from the polyatomic ions NH4+ and PO43- is Group of answer choices NH4PO4 (NH4)3PO4 (NH4)2(PO4)2 NH4(PO4)3 The Correct Answer and Explanation is: Correct Answer: (NH\u2084)\u2083PO\u2084 When determining the formula for a compound formed from polyatomic ions, the charges of the ions involved must be balanced. The ammonium ion (NH\u2084\u207a) [&hellip;]<\/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-235645","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/235645","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=235645"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/235645\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=235645"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=235645"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=235645"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}