{"id":251262,"date":"2025-07-10T16:01:15","date_gmt":"2025-07-10T16:01:15","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=251262"},"modified":"2025-07-10T16:01:18","modified_gmt":"2025-07-10T16:01:18","slug":"which-of-the-following-atoms-or-ions-is-diamagnetic","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/07\/10\/which-of-the-following-atoms-or-ions-is-diamagnetic\/","title":{"rendered":"Which of the following atoms or ions is diamagnetic"},"content":{"rendered":"\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/learnexams.com\/blog\/wp-content\/uploads\/2025\/07\/image-383.png\" alt=\"\" class=\"wp-image-251263\"\/><\/figure>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-0-color\">The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n<p>The correct answers are:<br>(a)&nbsp;<strong>Ga\u207a<\/strong><br>(b)&nbsp;<strong>Br\u207a<\/strong><\/p>\n\n\n\n<p>Here is the explanation:<\/p>\n\n\n\n<p>The magnetic properties of an atom or ion depend on its electron configuration. A species is&nbsp;<strong>diamagnetic<\/strong>&nbsp;if all its electrons are in paired orbitals. These substances are weakly repelled by an external magnetic field. In contrast, a species is&nbsp;<strong>paramagnetic<\/strong>&nbsp;if it has one or more unpaired electrons. The spin of these unpaired electrons creates a small magnetic moment, causing the substance to be attracted to an external magnetic field. To determine the magnetic property, we must find the electron configuration for each species.<\/p>\n\n\n\n<p><strong>(a) Which is diamagnetic?<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Ti\u00b3\u207a<\/strong>: Titanium (Ti, Z=22) is [Ar] 4s\u00b2 3d\u00b2. The Ti\u00b3\u207a ion loses three electrons, resulting in the configuration [Ar] 3d\u00b9. It has one unpaired electron, so it is paramagnetic.<\/li>\n\n\n\n<li><strong>Ga\u207a<\/strong>: Gallium (Ga, Z=31) is [Ar] 4s\u00b2 3d\u00b9\u2070 4p\u00b9. The Ga\u207a ion loses its single 4p electron, resulting in the configuration [Ar] 4s\u00b2 3d\u00b9\u2070. Both the 4s and 3d subshells are completely filled. With no unpaired electrons,\u00a0<strong>Ga\u207a is diamagnetic<\/strong>.<\/li>\n\n\n\n<li><strong>N\u00b2\u207a<\/strong>: Nitrogen (N, Z=7) is 1s\u00b2 2s\u00b2 2p\u00b3. The N\u00b2\u207a ion is 1s\u00b2 2s\u00b2 2p\u00b9. It has one unpaired electron in its 2p orbital, so it is paramagnetic.<\/li>\n\n\n\n<li><strong>Br\u207a<\/strong>: Bromine (Br, Z=35) is [Ar] 4s\u00b2 3d\u00b9\u2070 4p\u2075. The Br\u207a ion is [Ar] 4s\u00b2 3d\u00b9\u2070 4p\u2074. Its 4p subshell contains two unpaired electrons, making it paramagnetic.<\/li>\n\n\n\n<li><strong>Mn\u00b3\u207a<\/strong>: Manganese (Mn, Z=25) is [Ar] 4s\u00b2 3d\u2075. The Mn\u00b3\u207a ion is [Ar] 3d\u2074. It has four unpaired electrons, so it is paramagnetic.<\/li>\n<\/ul>\n\n\n\n<p><strong>(b) Which is paramagnetic?<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Be<\/strong>: Beryllium (Be, Z=4) is 1s\u00b2 2s\u00b2. All electrons are paired, so it is diamagnetic.<\/li>\n\n\n\n<li><strong>V\u2075\u207a<\/strong>: Vanadium (V, Z=23) is [Ar] 4s\u00b2 3d\u00b3. The V\u2075\u207a ion loses all five valence electrons, leaving the noble gas configuration [Ar]. All electrons are paired, so it is diamagnetic.<\/li>\n\n\n\n<li><strong>Na\u207a<\/strong>: Sodium (Na, Z=11) loses one electron to form the Na\u207a ion with the configuration [Ne]. All electrons are paired, so it is diamagnetic.<\/li>\n\n\n\n<li><strong>Br\u207a<\/strong>: As determined above, the Br\u207a ion has the configuration [Ar] 4s\u00b2 3d\u00b9\u2070 4p\u2074, which contains two unpaired electrons. Therefore,\u00a0<strong>Br\u207a is paramagnetic<\/strong>.<\/li>\n\n\n\n<li><strong>Ca\u00b2\u207a<\/strong>: Calcium (Ca, Z=20) loses two electrons to form the Ca\u00b2\u207a ion with the configuration [Ar]. All electrons are paired, so it is diamagnetic.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/learnexams.com\/blog\/wp-content\/uploads\/2025\/07\/learnexams-banner9-41.jpeg\" alt=\"\" class=\"wp-image-251266\"\/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>The Correct Answer and Explanation is: The correct answers are:(a)&nbsp;Ga\u207a(b)&nbsp;Br\u207a Here is the explanation: The magnetic properties of an atom or ion depend on its electron configuration. A species is&nbsp;diamagnetic&nbsp;if all its electrons are in paired orbitals. These substances are weakly repelled by an external magnetic field. In contrast, a species is&nbsp;paramagnetic&nbsp;if it has one [&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-251262","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/251262","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=251262"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/251262\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=251262"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=251262"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=251262"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}