{"id":5722,"date":"2025-05-21T09:06:31","date_gmt":"2025-05-21T09:06:31","guid":{"rendered":"https:\/\/yaveni.com\/blog\/?p=5722"},"modified":"2025-05-21T09:06:33","modified_gmt":"2025-05-21T09:06:33","slug":"what-is-the-systematic-name-for-li2cr2o7","status":"publish","type":"post","link":"https:\/\/gaviki.com\/blog\/what-is-the-systematic-name-for-li2cr2o7\/","title":{"rendered":"What is the systematic name for Li2Cr2O7"},"content":{"rendered":"\n<p>What is the systematic name for Li2Cr2O7? What is the ionic charge on Cr?<\/p>\n\n\n\n<p><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\"><strong>The correct answer and explanation is :<\/strong><\/mark><\/p>\n\n\n\n<p><strong>Systematic name of Li\u2082Cr\u2082O\u2087:<\/strong><br><strong>Lithium dichromate<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><strong>Ionic charge on Cr in Li\u2082Cr\u2082O\u2087:<\/strong><br>Chromium (Cr) has an oxidation state of <strong>+6<\/strong> in lithium dichromate.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Explanation (about 300 words):<\/h3>\n\n\n\n<p>Lithium dichromate, Li\u2082Cr\u2082O\u2087, is an ionic compound composed of lithium ions (Li\u207a) and the dichromate ion (Cr\u2082O\u2087\u00b2\u207b).<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Step 1: Understanding the compound components<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Lithium (Li) is an alkali metal in Group 1 of the periodic table and almost always forms a +1 ion (Li\u207a).<\/li>\n\n\n\n<li>The compound formula shows two lithium atoms: Li\u2082, meaning there are two Li\u207a ions contributing a total positive charge of +2.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Step 2: The anion \u2013 dichromate ion (Cr\u2082O\u2087\u00b2\u207b)<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The anion in the compound is the dichromate ion, Cr\u2082O\u2087\u00b2\u207b.<\/li>\n\n\n\n<li>The charge on the dichromate ion is known to be -2 overall.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Step 3: Determining the oxidation state of chromium<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Oxygen in almost all compounds has an oxidation state of -2.<\/li>\n\n\n\n<li>There are seven oxygen atoms in the dichromate ion, so total oxygen charge = 7 \u00d7 (-2) = -14.<\/li>\n\n\n\n<li>The overall charge on the dichromate ion is -2.<\/li>\n\n\n\n<li>Let the oxidation state of chromium be $x$. Since there are two chromium atoms, their combined charge is $2x$.<\/li>\n<\/ul>\n\n\n\n<p>Using the oxidation state rule:<br>$2x + (-14) = -2$<\/p>\n\n\n\n<p>Simplify:<br>$2x &#8211; 14 = -2$<br>$2x = -2 + 14 = 12$<br>$x = \\frac{12}{2} = +6$<\/p>\n\n\n\n<p>Thus, each chromium atom has an oxidation state of +6.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Step 4: Naming the compound<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The cation is lithium: <strong>lithium<\/strong><\/li>\n\n\n\n<li>The anion is dichromate, which is a common polyatomic ion derived from chromium and oxygen.<\/li>\n\n\n\n<li>The systematic name combines the cation and the anion: <strong>lithium dichromate<\/strong>.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><strong>Summary:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The compound is composed of 2 Li\u207a ions and 1 dichromate ion (Cr\u2082O\u2087\u00b2\u207b).<\/li>\n\n\n\n<li>Chromium in dichromate is in the +6 oxidation state.<\/li>\n\n\n\n<li>The systematic name is <strong>lithium dichromate<\/strong>.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>What is the systematic name for Li2Cr2O7? What is the ionic charge on Cr? The correct answer and explanation is : Systematic name of Li\u2082Cr\u2082O\u2087:Lithium dichromate Ionic charge on Cr in Li\u2082Cr\u2082O\u2087:Chromium (Cr) has an oxidation state of +6 in lithium dichromate. Explanation (about 300 words): Lithium dichromate, Li\u2082Cr\u2082O\u2087, is an ionic compound composed of [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-5722","post","type-post","status-publish","format-standard","hentry"],"_links":{"self":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/5722","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=5722"}],"version-history":[{"count":1,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/5722\/revisions"}],"predecessor-version":[{"id":5723,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/5722\/revisions\/5723"}],"wp:attachment":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/media?parent=5722"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/categories?post=5722"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/tags?post=5722"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}