{"id":21139,"date":"2025-06-15T07:56:58","date_gmt":"2025-06-15T07:56:58","guid":{"rendered":"https:\/\/gaviki.com\/blog\/?p=21139"},"modified":"2025-06-15T07:57:02","modified_gmt":"2025-06-15T07:57:02","slug":"which-of-the-following-molecules-has-only-ionic-bonds","status":"publish","type":"post","link":"https:\/\/gaviki.com\/blog\/which-of-the-following-molecules-has-only-ionic-bonds\/","title":{"rendered":"Which of the following molecules has only ionic bonds"},"content":{"rendered":"\n<p>Which of the following molecules has only ionic bonds? a) KCl c) Cl2 b) HF d) Na2SO4<\/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>The correct answer is <strong>d) Na\u2082SO\u2084<\/strong> (sodium sulfate).<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Explanation:<\/h3>\n\n\n\n<p><strong>Ionic bonds<\/strong> form when there is a complete transfer of electrons from one atom to another, usually between metals and nonmetals, resulting in positively charged cations and negatively charged anions held together by strong electrostatic forces.<\/p>\n\n\n\n<p>Let&#8217;s analyze each option:<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><strong>a) KCl (Potassium chloride)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>K is a metal, Cl is a nonmetal.<\/li>\n\n\n\n<li>The bond between K and Cl is ionic because potassium donates one electron to chlorine, forming K\u207a and Cl\u207b ions.<\/li>\n\n\n\n<li>So, KCl contains ionic bonds <strong>between K\u207a and Cl\u207b ions<\/strong>.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><strong>b) HF (Hydrogen fluoride)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Both H and F are nonmetals.<\/li>\n\n\n\n<li>HF has a <strong>polar covalent bond<\/strong> because electrons are shared unequally, with fluorine pulling electrons strongly toward itself.<\/li>\n\n\n\n<li>This is <strong>not an ionic bond<\/strong> but a covalent bond with polarity.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><strong>c) Cl\u2082 (Chlorine molecule)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>This is a molecule of two chlorine atoms.<\/li>\n\n\n\n<li>Both are the same element, sharing electrons equally.<\/li>\n\n\n\n<li>The bond is a <strong>nonpolar covalent bond<\/strong>, not ionic.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><strong>d) Na\u2082SO\u2084 (Sodium sulfate)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Na is a metal, and SO\u2084 (sulfate) is a polyatomic ion made of nonmetals.<\/li>\n\n\n\n<li>The bond <strong>between Na\u207a ions and SO\u2084\u00b2\u207b ions is ionic<\/strong> \u2014 the metal cations interact electrostatically with the polyatomic anion.<\/li>\n\n\n\n<li>However, <strong>inside the sulfate ion (SO\u2084\u00b2\u207b), the bonds between sulfur and oxygen are covalent<\/strong>.<\/li>\n\n\n\n<li>Since the question asks which molecule has only ionic bonds, strictly speaking, <strong>Na\u2082SO\u2084 contains ionic bonds between sodium and sulfate ions, but covalent bonds within the sulfate ion.<\/strong><\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">So why pick Na\u2082SO\u2084?<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>KCl also contains ionic bonds only, between K\u207a and Cl\u207b ions.<\/li>\n\n\n\n<li>Na\u2082SO\u2084 contains ionic bonds <strong>between Na\u207a and SO\u2084\u00b2\u207b ions<\/strong>, but covalent bonds within SO\u2084\u00b2\u207b.<\/li>\n\n\n\n<li>Cl\u2082 and HF have <strong>only covalent bonds<\/strong> (nonpolar and polar respectively).<\/li>\n<\/ul>\n\n\n\n<p>If the question asks for a compound with <strong>only ionic bonds<\/strong>, the best strict answer is <strong>KCl<\/strong> because it consists purely of ionic bonds between K\u207a and Cl\u207b.<\/p>\n\n\n\n<p>If the question means \u201ccontains ionic bonds,\u201d then both KCl and Na\u2082SO\u2084 qualify, but Na\u2082SO\u2084 has covalent bonds inside the sulfate ion.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Final clarification:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Only ionic bonds:<\/strong> KCl<\/li>\n\n\n\n<li><strong>Ionic + covalent bonds:<\/strong> Na\u2082SO\u2084<\/li>\n\n\n\n<li><strong>Only covalent bonds:<\/strong> HF and Cl\u2082<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><strong>Therefore, the molecule with only ionic bonds is:<\/strong><\/p>\n\n\n\n<p><strong>a) KCl<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Which of the following molecules has only ionic bonds? a) KCl c) Cl2 b) HF d) Na2SO4 The correct answer and explanation is: The correct answer is d) Na\u2082SO\u2084 (sodium sulfate). Explanation: Ionic bonds form when there is a complete transfer of electrons from one atom to another, usually between metals and nonmetals, resulting in [&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-21139","post","type-post","status-publish","format-standard","hentry","category-quiz-questions"],"_links":{"self":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/21139","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=21139"}],"version-history":[{"count":1,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/21139\/revisions"}],"predecessor-version":[{"id":21141,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/21139\/revisions\/21141"}],"wp:attachment":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/media?parent=21139"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/categories?post=21139"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/tags?post=21139"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}