Why is hydroxide written as OH1- and not OH2?<\/p>\n\n\n\n
The Correct Answer and Explanation is :<\/strong><\/mark><\/p>\n\n\n\n The hydroxide ion is represented as ( \\text{OH}^- ) (not ( \\text{OH}_2 )) due to its chemical structure and the nature of the ion itself<\/strong><\/mark>. The hydroxide ion consists of one oxygen atom covalently bonded to one hydrogen atom. The “1” in ( \\text{OH}^1 ) indicates the negative charge of the ion, while the subscript indicates how many of each atom are present.<\/p>\n\n\n\n Chemical Structure:<\/strong> Ionic Representation:<\/strong> Misinterpretation of ( \\text{OH}_2 ):<\/strong> In summary, ( \\text{OH}^- ) accurately reflects the structure and charge of the hydroxide ion, indicating one oxygen atom, one hydrogen atom, and a single negative charge, while ( \\text{OH}_2 ) does not correctly represent the species in question.<\/p>\n","protected":false},"excerpt":{"rendered":" Why is hydroxide written as OH1- and not OH2? The Correct Answer and Explanation is : The hydroxide ion is represented as ( \\text{OH}^- ) (not ( \\text{OH}_2 )) due to its chemical structure and the nature of the ion itself. The hydroxide ion consists of one oxygen atom covalently bonded to one hydrogen atom. […]<\/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-152573","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/152573","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=152573"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/152573\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=152573"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=152573"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=152573"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
In the hydroxide ion, oxygen has six electrons in its valence shell and requires two more electrons to achieve a stable octet configuration. The hydrogen atom contributes one electron to the bond, allowing oxygen to share this electron, forming a covalent bond. However, oxygen still has an incomplete octet and thus retains a negative charge due to having gained an additional electron from another atom or molecule, leading to the overall charge of ( -1 ).<\/p>\n\n\n\n
When discussing ions, it’s crucial to distinguish between the formula for the neutral molecule and the ion itself. ( \\text{OH} ) is the formula for the hydroxyl radical, a neutral species with one hydrogen and one oxygen. However, when this species gains an extra electron, it becomes negatively charged, thus forming the hydroxide ion ( \\text{OH}^- ).<\/p>\n\n\n\n
Writing hydroxide as ( \\text{OH}_2 ) might suggest that there are two hydroxyl groups present, which is misleading and incorrect. It could imply a neutral molecule with a different bonding situation or possibly suggest that two hydrogen atoms are bonded to a single oxygen atom, which is not the case for hydroxide.<\/p>\n\n\n\n