{"id":203716,"date":"2025-03-20T13:21:08","date_gmt":"2025-03-20T13:21:08","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=203716"},"modified":"2025-03-20T13:21:09","modified_gmt":"2025-03-20T13:21:09","slug":"stock-system-name-for-cro3-is-it-chromium-vi-trioxide-or-chromium-vi-oxide","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/03\/20\/stock-system-name-for-cro3-is-it-chromium-vi-trioxide-or-chromium-vi-oxide\/","title":{"rendered":"stock system name for CrO3 Is it Chromium (VI) trioxide or Chromium (VI) oxide"},"content":{"rendered":"\n

stock system name for CrO3 Is it Chromium (VI) trioxide or Chromium (VI) oxide?<\/p>\n\n\n\n

The correct answer and explanation is :<\/strong><\/mark><\/p>\n\n\n\n

The correct Stock system name for CrO\u2083<\/strong> is Chromium (VI) oxide<\/strong>, not Chromium (VI) trioxide<\/strong>.<\/p>\n\n\n\n

Explanation:<\/h3>\n\n\n\n
    \n
  1. Stock System Naming<\/strong>:\n
      \n
    • In the Stock system, the oxidation state of the metal is written in Roman numerals within parentheses after the element name.<\/li>\n\n\n\n
    • Chromium can exhibit multiple oxidation states, but in CrO\u2083<\/strong>, it has an oxidation state of +6<\/strong> (since oxygen is typically -2<\/strong> and there are three oxygens, the total charge is -6, requiring chromium to be +6 for neutrality).<\/li>\n\n\n\n
    • Thus, the cation is Chromium (VI)<\/strong>.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
    • Oxide vs. Trioxide<\/strong>:\n
        \n
      • “Oxide”<\/strong> is the preferred term for compounds containing only metal and oxygen in systematic nomenclature.<\/li>\n\n\n\n
      • “Trioxide”<\/strong> is a molecular naming convention used primarily for covalent compounds, such as SO\u2083 (Sulfur trioxide)<\/strong> or N\u2082O\u2083 (Dinitrogen trioxide)<\/strong>.<\/li>\n\n\n\n
      • Since CrO\u2083<\/strong> is an ionic compound (a metal combined with oxygen), it follows the ionic nomenclature, making Chromium (VI) oxide<\/strong> the correct name.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
      • Comparison with Other Chromium Oxides<\/strong>:\n
          \n
        • Cr\u2082O\u2083<\/strong> is named Chromium (III) oxide<\/strong>.<\/li>\n\n\n\n
        • CrO\u2082<\/strong> is named Chromium (IV) oxide<\/strong>.<\/li>\n\n\n\n
        • CrO\u2083<\/strong> follows the same pattern, making Chromium (VI) oxide<\/strong> its correct name.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
        • Common Mistake<\/strong>:\n
            \n
          • The term “trioxide”<\/strong> is sometimes mistakenly used because CrO\u2083<\/strong> contains three oxygen atoms.<\/li>\n\n\n\n
          • However, systematic IUPAC naming for metal oxides does not use prefixes like “mono-“, “di-“, or “tri-” unless necessary for clarity (such as with non-metal oxides).<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n

            Thus, the correct Stock system name is Chromium (VI) oxide<\/strong>.<\/p>\n","protected":false},"excerpt":{"rendered":"

            stock system name for CrO3 Is it Chromium (VI) trioxide or Chromium (VI) oxide? The correct answer and explanation is : The correct Stock system name for CrO\u2083 is Chromium (VI) oxide, not Chromium (VI) trioxide. Explanation: Thus, the correct Stock system name is Chromium (VI) oxide.<\/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-203716","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/203716","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=203716"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/203716\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=203716"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=203716"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=203716"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}