{"id":222002,"date":"2025-05-30T19:30:05","date_gmt":"2025-05-30T19:30:05","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=222002"},"modified":"2025-05-30T19:30:08","modified_gmt":"2025-05-30T19:30:08","slug":"zn2-and-po43-make-zn3po42-right","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/05\/30\/zn2-and-po43-make-zn3po42-right\/","title":{"rendered":"Zn2+ and PO43- make Zn3(PO4)2, Right"},"content":{"rendered":"\n

Zn2+ and PO43- make Zn3(PO4)2, Right? im assuming its called zinc(II) phosphate. or is it zinc phosphate because zinc is always +2 in compounds? I just need someone to check my work!<\/p>\n\n\n\n

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

Yes, Zn\u00b2\u207a<\/strong> and PO\u2084\u00b3\u207b<\/strong> combine to form Zn\u2083(PO\u2084)\u2082<\/strong>, and the correct name is zinc phosphate<\/strong>, not<\/em> zinc(II) phosphate. Here’s the explanation:<\/p>\n\n\n\n

\n\n\n\n

\u2705 Correct Compound: Zn\u2083(PO\u2084)\u2082<\/strong><\/h3>\n\n\n\n

To determine the formula:<\/p>\n\n\n\n

    \n
  • Zinc ion is Zn\u00b2\u207a<\/strong>.<\/li>\n\n\n\n
  • Phosphate ion is PO\u2084\u00b3\u207b<\/strong>.<\/li>\n<\/ul>\n\n\n\n

    To balance the charges:<\/p>\n\n\n\n

      \n
    • You need 3 Zn\u00b2\u207a (total +6) and 2 PO\u2084\u00b3\u207b (total -6) to neutralize each other.<\/li>\n\n\n\n
    • So the formula is Zn\u2083(PO\u2084)\u2082<\/strong>.<\/li>\n<\/ul>\n\n\n\n
      \n\n\n\n

      \u2705 Correct Name: Zinc Phosphate<\/strong><\/h3>\n\n\n\n

      Now, naming:<\/p>\n\n\n\n

      Zinc<\/strong> is a transition metal<\/strong>, but it’s an exception in nomenclature. While many transition metals can have multiple oxidation states (and therefore need Roman numerals in naming), zinc almost always forms a +2 ion<\/strong>, just like how silver is nearly always +1.<\/p>\n\n\n\n

      Thus, even though zinc is a transition metal, it forms only one common ion (Zn\u00b2\u207a)<\/strong>. According to IUPAC naming conventions<\/strong>, you don\u2019t need to include the oxidation number in the name if the metal only has one common charge<\/strong>.<\/p>\n\n\n\n

        \n
      • “Zinc phosphate”<\/strong> is correct and sufficient.<\/li>\n\n\n\n
      • “Zinc(II) phosphate”<\/strong> is technically not incorrect, but it\u2019s redundant and not the preferred name.<\/li>\n<\/ul>\n\n\n\n
        \n\n\n\n

        \ud83d\udd0d Summary:<\/h3>\n\n\n\n
          \n
        • Formula<\/strong>: Zn\u2083(PO\u2084)\u2082<\/li>\n\n\n\n
        • Name<\/strong>: Zinc phosphate<\/li>\n<\/ul>\n\n\n\n

          This distinction is important in chemistry, especially for transition metals. For example:<\/p>\n\n\n\n

            \n
          • Fe\u00b2\u207a<\/strong> and Fe\u00b3\u207a<\/strong> form different compounds: iron(II) and iron(III).<\/li>\n\n\n\n
          • But Zn\u00b2\u207a<\/strong> always forms zinc compounds, so no Roman numeral is needed.<\/li>\n<\/ul>\n\n\n\n
            \"\"<\/figure>\n","protected":false},"excerpt":{"rendered":"

            Zn2+ and PO43- make Zn3(PO4)2, Right? im assuming its called zinc(II) phosphate. or is it zinc phosphate because zinc is always +2 in compounds? I just need someone to check my work! The Correct Answer and Explanation is: Yes, Zn\u00b2\u207a and PO\u2084\u00b3\u207b combine to form Zn\u2083(PO\u2084)\u2082, and the correct name is zinc phosphate, not zinc(II) […]<\/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-222002","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/222002","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=222002"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/222002\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=222002"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=222002"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=222002"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}