{"id":26424,"date":"2025-06-19T14:27:57","date_gmt":"2025-06-19T14:27:57","guid":{"rendered":"https:\/\/gaviki.com\/blog\/?p=26424"},"modified":"2025-06-19T14:27:58","modified_gmt":"2025-06-19T14:27:58","slug":"the-intermolecular-forces-responsible-for-the-fact-that-ch4-has-the-lowest-boiling-point-in-the-set-ch4-sih4-geh4-snh4-is-are","status":"publish","type":"post","link":"https:\/\/gaviki.com\/blog\/the-intermolecular-forces-responsible-for-the-fact-that-ch4-has-the-lowest-boiling-point-in-the-set-ch4-sih4-geh4-snh4-is-are\/","title":{"rendered":"The intermolecular force(s) responsible for the fact that CH4 has the lowest boiling point in the set CH4, SiH4, GeH4, SnH4 is\/are"},"content":{"rendered":"\n<p>The intermolecular force(s) responsible for the fact that CH4 has the lowest boiling point in the set CH4, SiH4, GeH4, SnH4 is\/are: a) Mainly dispersion forces but also dipole-dipole interactions b) Hydrogen bonding c) London dispersion forces d) Dipole-dipole interaction e) Mainly hydrogen bonding but also London dispersion force<\/p>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-green-cyan-color\">The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n<p><strong>Correct Answer: c) London dispersion forces<\/strong><\/p>\n\n\n\n<p><strong>Explanation:<\/strong><\/p>\n\n\n\n<p>The boiling point of a substance is largely influenced by the strength of the intermolecular forces acting between its molecules. In the case of <strong>CH\u2084 (methane), SiH\u2084 (silane), GeH\u2084 (germane), and SnH\u2084 (stannane)<\/strong>, all these compounds are <strong>nonpolar tetrahedral molecules<\/strong> made up of a central Group 14 element bonded to hydrogen atoms.<\/p>\n\n\n\n<p>Since these molecules are <strong>nonpolar<\/strong>, they do <strong>not<\/strong> have <strong>dipole-dipole interactions<\/strong>. Furthermore, they also <strong>cannot form hydrogen bonds<\/strong> because hydrogen bonding only occurs when hydrogen is bonded to highly electronegative elements such as fluorine, oxygen, or nitrogen. None of these Group 14 hydrides meet that requirement.<\/p>\n\n\n\n<p>Therefore, the only type of intermolecular force present in CH\u2084, SiH\u2084, GeH\u2084, and SnH\u2084 is <strong>London dispersion forces<\/strong>. These are weak intermolecular forces that arise from temporary fluctuations in the electron distribution within molecules, creating instantaneous dipoles that induce dipoles in neighboring molecules.<\/p>\n\n\n\n<p>Among the set, <strong>CH\u2084<\/strong> has the <strong>lowest molar mass<\/strong> and therefore the <strong>smallest number of electrons<\/strong> and <strong>smallest molecular size<\/strong>. Because of this, the London dispersion forces between CH\u2084 molecules are <strong>weaker<\/strong> compared to those in SiH\u2084, GeH\u2084, and SnH\u2084. As a result, less energy is needed to separate CH\u2084 molecules from each other, and this explains why <strong>CH\u2084 has the lowest boiling point<\/strong> among the group.<\/p>\n\n\n\n<p>As the molecular weight increases from CH\u2084 to SnH\u2084, the number of electrons and polarizability of the molecules also increase, strengthening the London dispersion forces and thus raising the boiling points of the other compounds.<\/p>\n\n\n\n<p>In conclusion, the correct choice is <strong>London dispersion forces<\/strong>, and these are the <strong>only<\/strong> intermolecular forces acting in these nonpolar molecules.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"852\" height=\"1024\" src=\"https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner8-95.jpeg\" alt=\"\" class=\"wp-image-26425\" srcset=\"https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner8-95.jpeg 852w, https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner8-95-250x300.jpeg 250w, https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner8-95-768x923.jpeg 768w\" sizes=\"auto, (max-width: 852px) 100vw, 852px\" \/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>The intermolecular force(s) responsible for the fact that CH4 has the lowest boiling point in the set CH4, SiH4, GeH4, SnH4 is\/are: a) Mainly dispersion forces but also dipole-dipole interactions b) Hydrogen bonding c) London dispersion forces d) Dipole-dipole interaction e) Mainly hydrogen bonding but also London dispersion force The Correct Answer and Explanation is: [&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-26424","post","type-post","status-publish","format-standard","hentry","category-quiz-questions"],"_links":{"self":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/26424","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=26424"}],"version-history":[{"count":1,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/26424\/revisions"}],"predecessor-version":[{"id":26426,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/26424\/revisions\/26426"}],"wp:attachment":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/media?parent=26424"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/categories?post=26424"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/tags?post=26424"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}