{"id":182979,"date":"2025-01-15T09:31:50","date_gmt":"2025-01-15T09:31:50","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=182979"},"modified":"2025-01-15T09:31:52","modified_gmt":"2025-01-15T09:31:52","slug":"what-is-the-chemical-formula-for-ironii-phosphate","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/01\/15\/what-is-the-chemical-formula-for-ironii-phosphate\/","title":{"rendered":"\u00a0What is the chemical formula for iron(II) phosphate"},"content":{"rendered":"\n<p>&nbsp;What is the chemical formula for iron(II) phosphate? A) Fe3P2 B) Fe3(PO4)2 C) Fe2PO4 D) Fe2P 2) What is the charge on the Cr in the ionic compound Cr2O3? A) 1+ B) 3+ C) 2+ D) 2- 3) The formula for dinitrogen trioxide is A) (NO3)2 B) N(OH)3. C) N2O3. D) N302<\/p>\n\n\n\n<p><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-6-color\"><strong>The Correct Answer and Explanation is :<\/strong><\/mark><\/p>\n\n\n\n<p>1) <strong>What is the chemical formula for iron(II) phosphate?<\/strong><br><strong>Correct answer: B) Fe\u2083(PO\u2084)\u2082<\/strong><\/p>\n\n\n\n<p>Explanation:<br>Iron(II) phosphate refers to a compound containing iron with a +2 charge (Fe\u00b2\u207a) and phosphate ions (PO\u2084\u00b3\u207b). In the formula, the charges must balance, so you need to determine how many of each ion are required to balance the overall charge.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The charge of Fe\u00b2\u207a is +2, and the charge of PO\u2084\u00b3\u207b is -3.<\/li>\n\n\n\n<li>To balance the charges, you need 3 iron ions (Fe\u00b2\u207a) to counteract the 2 phosphate ions (PO\u2084\u00b3\u207b), because 3 \u00d7 (+2) = +6 and 2 \u00d7 (-3) = -6. This gives a neutral overall charge.<\/li>\n\n\n\n<li>Therefore, the correct formula is Fe\u2083(PO\u2084)\u2082.<\/li>\n<\/ul>\n\n\n\n<p>2) <strong>What is the charge on the Cr in the ionic compound Cr\u2082O\u2083?<\/strong><br><strong>Correct answer: B) 3+<\/strong><\/p>\n\n\n\n<p>Explanation:<br>In Cr\u2082O\u2083, chromium (Cr) is paired with oxygen (O). Oxygen typically has a charge of -2 (as in O\u00b2\u207b). Since there are 3 oxygen atoms, the total charge from oxygen is 3 \u00d7 (-2) = -6.<br>To balance this charge, the total positive charge from the two chromium ions must be +6.<br>Since there are 2 chromium ions, each must have a charge of +3, so the charge on Cr in Cr\u2082O\u2083 is +3. Therefore, the correct charge on chromium is 3+.<\/p>\n\n\n\n<p>3) <strong>The formula for dinitrogen trioxide is:<\/strong><br><strong>Correct answer: C) N\u2082O\u2083<\/strong><\/p>\n\n\n\n<p>Explanation:<br>Dinitrogen trioxide is a molecular compound made up of nitrogen and oxygen. The prefix &#8220;di-&#8221; indicates two nitrogen atoms, and the prefix &#8220;tri-&#8221; indicates three oxygen atoms. Therefore, the correct molecular formula is N\u2082O\u2083. This is a simple compound with two nitrogen atoms and three oxygen atoms.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Option A (NO\u2083)\u2082 refers to the nitrate ion (NO\u2083\u207b), not dinitrogen trioxide.<\/li>\n\n\n\n<li>Option B (N(OH)\u2083) refers to a different nitrogen compound, possibly a hydroxide.<\/li>\n\n\n\n<li>Option D (N\u2083O\u2082) is an incorrect ratio of nitrogen and oxygen for dinitrogen trioxide.<\/li>\n<\/ul>\n\n\n\n<p>Therefore, the correct molecular formula is N\u2082O\u2083.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp;What is the chemical formula for iron(II) phosphate? A) Fe3P2 B) Fe3(PO4)2 C) Fe2PO4 D) Fe2P 2) What is the charge on the Cr in the ionic compound Cr2O3? A) 1+ B) 3+ C) 2+ D) 2- 3) The formula for dinitrogen trioxide is A) (NO3)2 B) N(OH)3. C) N2O3. D) N302 The Correct Answer [&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-182979","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/182979","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=182979"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/182979\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=182979"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=182979"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=182979"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}