{"id":229380,"date":"2025-06-08T06:46:49","date_gmt":"2025-06-08T06:46:49","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=229380"},"modified":"2025-06-08T06:46:51","modified_gmt":"2025-06-08T06:46:51","slug":"provide-the-iupac-name-for-the-molecule-below","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/06\/08\/provide-the-iupac-name-for-the-molecule-below\/","title":{"rendered":"Provide the IUPAC name for the molecule below"},"content":{"rendered":"\n

Provide the IUPAC name for the molecule below<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n

The molecule depicted in the image is 1-bromo-2-chloroethane<\/strong>.<\/p>\n\n\n\n

\n\n\n\n

Explanation <\/h3>\n\n\n\n

To determine the IUPAC name of the molecule, we follow the systematic rules established by the International Union of Pure and Applied Chemistry (IUPAC) for naming organic compounds.<\/p>\n\n\n\n

Step 1: Identify the Longest Carbon Chain<\/h4>\n\n\n\n

The structure consists of a simple two-carbon alkane chain, which is ethane<\/strong> (C\u2082H\u2086) as the parent hydrocarbon.<\/p>\n\n\n\n

Step 2: Identify and Name Substituents<\/h4>\n\n\n\n

The two substituents attached to the ethane chain are:<\/p>\n\n\n\n

    \n
  • A bromine atom (Br)<\/strong>.<\/li>\n\n\n\n
  • A chlorine atom (Cl)<\/strong>.<\/li>\n<\/ul>\n\n\n\n

    Halogens are treated as substituents in IUPAC nomenclature and are named as prefixes: bromo-<\/strong> for Br and chloro-<\/strong> for Cl.<\/p>\n\n\n\n

    Step 3: Number the Carbon Chain<\/h4>\n\n\n\n

    The chain must be numbered to give the lowest possible numbers to the substituents. Numbering from left to right:<\/p>\n\n\n\n

      \n
    • Carbon 1: Br (bromine)<\/li>\n\n\n\n
    • Carbon 2: Cl (chlorine)<\/li>\n<\/ul>\n\n\n\n

      Thus, the substituents are on carbons 1 and 2 respectively. If you numbered it the other way, Cl would be on carbon 1 and Br on carbon 2 \u2014 the same set of numbers (1 and 2), so next we apply alphabetical order.<\/p>\n\n\n\n

      Step 4: Apply Alphabetical Order<\/h4>\n\n\n\n

      When two or more different substituents are present, they are listed in alphabetical order regardless of position:<\/p>\n\n\n\n

        \n
      • Bromo<\/strong> comes before chloro<\/strong> alphabetically.<\/li>\n<\/ul>\n\n\n\n

        Hence, the name is: 1-bromo-2-chloroethane<\/strong>.<\/p>\n\n\n\n

        \n\n\n\n

        Summary of Rules Applied:<\/h3>\n\n\n\n
          \n
        1. Base chain:<\/strong> Ethane.<\/li>\n\n\n\n
        2. Substituents:<\/strong> Bromo and chloro.<\/li>\n\n\n\n
        3. Numbering:<\/strong> Chosen to give substituents the lowest possible numbers.<\/li>\n\n\n\n
        4. Alphabetical order:<\/strong> Bromo before chloro.<\/li>\n<\/ol>\n\n\n\n

          This systematic approach ensures that the name 1-bromo-2-chloroethane<\/strong> uniquely and unambiguously describes the compound.<\/p>\n\n\n\n

          \"\"<\/figure>\n","protected":false},"excerpt":{"rendered":"

          Provide the IUPAC name for the molecule below The Correct Answer and Explanation is: The molecule depicted in the image is 1-bromo-2-chloroethane. Explanation To determine the IUPAC name of the molecule, we follow the systematic rules established by the International Union of Pure and Applied Chemistry (IUPAC) for naming organic compounds. Step 1: Identify the […]<\/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-229380","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/229380","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=229380"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/229380\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=229380"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=229380"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=229380"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}