{"id":214284,"date":"2025-05-14T04:13:01","date_gmt":"2025-05-14T04:13:01","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=214284"},"modified":"2025-05-14T04:13:04","modified_gmt":"2025-05-14T04:13:04","slug":"select-the-correct-iupac-name-for-the-cycloalkane-3","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/05\/14\/select-the-correct-iupac-name-for-the-cycloalkane-3\/","title":{"rendered":"Select the correct IUPAC name for the cycloalkane"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Select the correct IUPAC name for the cycloalkane:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The IUPAC name is: 1-fluoro-2-(2-methylethyl)cyclopentane<br>1-(2-methylethyl)-2-fluorocyclopentane<br>2-isopropyl-1-fluorocyclopentane<br>1-fluoro-2-(2-methylpropyl)cyclopentane<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-1-color\">The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The correct IUPAC name is: <strong>1-fluoro-2-(2-methylethyl)cyclopentane<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Explanation:<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">To determine the correct IUPAC name for a <strong>substituted cycloalkane<\/strong>, we must follow systematic steps outlined by IUPAC naming conventions. Let\u2019s break it down:<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>1. Identify the Parent Chain:<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The parent compound here is a <strong>cyclopentane<\/strong>, a five-membered carbon ring.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>2. Identify and Name Substituents:<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The two substituents are:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A <strong>fluoro<\/strong> group (\u2013F), which is a halogen.<\/li>\n\n\n\n<li>An alkyl group that looks like <strong>CH2\u2013CH(CH3)<\/strong>. This is called a <strong>2-methylethyl<\/strong> group (not to be confused with isopropyl or 2-methylpropyl).<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Let\u2019s analyze this group more carefully:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The carbon bonded to the ring is a <strong>CH2<\/strong>, attached to a <strong>CH<\/strong> (which has a <strong>CH3<\/strong> group).<\/li>\n\n\n\n<li>This structure matches the name <strong>2-methylethyl<\/strong>.<\/li>\n\n\n\n<li>It is <strong>not<\/strong> isopropyl (<strong>CH(CH3)2<\/strong>), and <strong>not<\/strong> 2-methylpropyl (<strong>CH2CH(CH3)2<\/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\"><strong>3. Number the Ring to Give the Lowest Set of Locants:<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">According to IUPAC rules:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Number the ring <strong>so that substituents get the lowest possible numbers.<\/strong><\/li>\n\n\n\n<li>The <strong>fluoro<\/strong> group has higher alphabetical priority than the alkyl group. Therefore, the carbon with the fluoro group becomes carbon <strong>1<\/strong>.<\/li>\n\n\n\n<li>This makes the alkyl group on carbon <strong>2<\/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\"><strong>4. Write the Name:<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Start with the <strong>position and name<\/strong> of the fluoro substituent: <strong>1-fluoro<\/strong>.<\/li>\n\n\n\n<li>Then list the alkyl group: <strong>2-(2-methylethyl)<\/strong>.<\/li>\n\n\n\n<li>Finally, add the parent name: <strong>cyclopentane<\/strong>.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">So, the correct IUPAC name is:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>1-fluoro-2-(2-methylethyl)cyclopentane<\/strong><\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Why the Other Options Are Incorrect:<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>1-(2-methylethyl)-2-fluorocyclopentane<\/strong>: Same groups, but not in alphabetical order\u2014fluoro must come first.<\/li>\n\n\n\n<li><strong>2-isopropyl-1-fluorocyclopentane<\/strong>: Incorrect group; isopropyl has a different structure.<\/li>\n\n\n\n<li><strong>1-fluoro-2-(2-methylpropyl)cyclopentane<\/strong>: Incorrect group; 2-methylpropyl contains an extra carbon.<\/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\"><strong>Conclusion:<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The accurate name follows IUPAC rules for alphabetical priority, correct substituent naming, and proper locant assignment:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u2705 <strong>1-fluoro-2-(2-methylethyl)cyclopentane<\/strong><\/p>\n<\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>Select the correct IUPAC name for the cycloalkane: The IUPAC name is: 1-fluoro-2-(2-methylethyl)cyclopentane1-(2-methylethyl)-2-fluorocyclopentane2-isopropyl-1-fluorocyclopentane1-fluoro-2-(2-methylpropyl)cyclopentane The Correct Answer and Explanation is: The correct IUPAC name is: 1-fluoro-2-(2-methylethyl)cyclopentane Explanation: To determine the correct IUPAC name for a substituted cycloalkane, we must follow systematic steps outlined by IUPAC naming conventions. Let\u2019s break it down: 1. Identify the Parent Chain: [&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-214284","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/214284","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=214284"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/214284\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=214284"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=214284"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=214284"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}