{"id":43125,"date":"2025-06-29T13:48:48","date_gmt":"2025-06-29T13:48:48","guid":{"rendered":"https:\/\/gaviki.com\/blog\/?p=43125"},"modified":"2025-06-29T13:48:49","modified_gmt":"2025-06-29T13:48:49","slug":"the-electron-configuration-of-ba2-is-isoelectronic-with-the-noble-gas-kr-65","status":"publish","type":"post","link":"https:\/\/gaviki.com\/blog\/the-electron-configuration-of-ba2-is-isoelectronic-with-the-noble-gas-kr-65\/","title":{"rendered":"The electron configuration of Ba2+ is isoelectronic with the noble gas: Kr. 65"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">The electron configuration of Ba2+ is isoelectronic with the noble gas: Kr. 65. Which element has the highest first ionization potential: fluorine. 66. Which element is the most electronegative one: a. As. 67. Lithophiles are found primarily in the Earth&#8217;s crust in silicate minerals; examples include Li, Mg, Ti, Al, and Cr (as their cations). 68. Which of the following is an example of a metalloid? b. Sn. 69. Which elements of the d-block can achieve the group oxidation state? Elements in Groups 9 to 10. 70. Which of the following oxides has only acidic character: MgO.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Let&#8217;s go through each of the questions one by one:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>65. The electron configuration of Ba\u00b2\u207a is isoelectronic with the noble gas: Kr.<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Explanation<\/strong>: The electron configuration of neutral Ba (Barium) is [Xe] 6s\u00b2. When Ba loses two electrons to form Ba\u00b2\u207a, the configuration becomes [Xe], which is exactly the same as the electron configuration of krypton (Kr), a noble gas. Thus, <strong>Ba\u00b2\u207a is isoelectronic with Kr<\/strong>.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>66. Which element has the highest first ionization potential: fluorine?<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Explanation<\/strong>: Ionization potential refers to the energy required to remove an electron from an atom in its gaseous state. <strong>Fluorine<\/strong> has the highest first ionization potential among the elements due to its small atomic size and high effective nuclear charge, making it harder to remove an electron. <strong>Fluorine<\/strong> is one of the most electronegative elements as well, and its high ionization energy reflects this.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>67. Which element is the most electronegative one: As?<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Explanation<\/strong>: <strong>Fluorine (F)<\/strong>, not arsenic (As), is the most electronegative element. Electronegativity is the ability of an atom to attract electrons when bonded to another atom. Fluorine is the most electronegative element on the periodic table, with an electronegativity value of 3.98 on the Pauling scale, whereas arsenic has a value of 2.18.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>68. Lithophiles are found primarily in the Earth&#8217;s crust in silicate minerals; examples include Li, Mg, Ti, Al, and Cr (as their cations).<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Explanation<\/strong>: Lithophiles are elements that tend to bond with oxygen and are found predominantly in the Earth&#8217;s crust. These elements often form silicates or oxides. Examples include <strong>Li (Lithium)<\/strong>, <strong>Mg (Magnesium)<\/strong>, <strong>Ti (Titanium)<\/strong>, <strong>Al (Aluminum)<\/strong>, and <strong>Cr (Chromium)<\/strong>, all of which form stable cations like Li\u207a, Mg\u00b2\u207a, Ti\u2074\u207a, Al\u00b3\u207a, and Cr\u00b3\u207a.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>69. Which of the following is an example of a metalloid? b. Sn<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Explanation<\/strong>: <strong>Tin (Sn)<\/strong> is actually a metal, not a metalloid. A <strong>metalloid<\/strong> is an element that has properties between metals and nonmetals. <strong>Examples<\/strong> of metalloids include elements like <strong>Si (Silicon)<\/strong>, <strong>B (Boron)<\/strong>, and <strong>Ge (Germanium)<\/strong>, which have semi-conductive properties.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>70. Which elements of the d-block can achieve the group oxidation state? Elements in Groups 9 to 10.<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Explanation<\/strong>: The elements in <strong>Groups 9 and 10<\/strong> of the d-block (Transition metals) can achieve the <strong>group oxidation state<\/strong>, particularly <strong>+1 and +2<\/strong> oxidation states. For example, elements like <strong>Ni (Nickel)<\/strong>, <strong>Pd (Palladium)<\/strong>, <strong>Pt (Platinum)<\/strong>, and <strong>Ir (Iridium)<\/strong> in Group 10 can form various oxidation states, including the +2 oxidation state. However, the <strong>group oxidation state<\/strong> generally refers to the most stable and common oxidation state for the elements in that group.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>71. Which of the following oxides has only acidic character: MgO.<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Explanation<\/strong>: <strong>MgO<\/strong> is an <strong>oxide of a metal (Magnesium)<\/strong> and behaves <strong>basic<\/strong> in nature. When it reacts with water, it forms <strong>Mg(OH)\u2082<\/strong>, a basic solution. In contrast, acidic oxides typically come from non-metals, like <strong>CO\u2082 (carbon dioxide)<\/strong> or <strong>SO\u2082 (sulfur dioxide)<\/strong>. Therefore, the correct answer for an oxide with only acidic character would not be <strong>MgO<\/strong> but rather an oxide like <strong>SO\u2082<\/strong>.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\">In summary:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Ba\u00b2\u207a is isoelectronic with Kr<\/strong>.<\/li>\n\n\n\n<li><strong>Fluorine has the highest first ionization potential<\/strong>.<\/li>\n\n\n\n<li><strong>Fluorine is the most electronegative element<\/strong>, not arsenic.<\/li>\n\n\n\n<li><strong>Lithophiles<\/strong> include elements like <strong>Li<\/strong>, <strong>Mg<\/strong>, <strong>Ti<\/strong>, <strong>Al<\/strong>, and <strong>Cr<\/strong>.<\/li>\n\n\n\n<li><strong>Tin (Sn)<\/strong> is a metal, not a metalloid.<\/li>\n\n\n\n<li><strong>Transition metals in Groups 9 and 10<\/strong> can achieve various oxidation states.<\/li>\n\n\n\n<li><strong>MgO<\/strong> is basic, not acidic.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner5-423.jpeg\" alt=\"\" class=\"wp-image-43135\" srcset=\"https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner5-423.jpeg 1024w, https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner5-423-300x300.jpeg 300w, https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner5-423-150x150.jpeg 150w, https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner5-423-768x768.jpeg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>The electron configuration of Ba2+ is isoelectronic with the noble gas: Kr. 65. Which element has the highest first ionization potential: fluorine. 66. Which element is the most electronegative one: a. As. 67. Lithophiles are found primarily in the Earth&#8217;s crust in silicate minerals; examples include Li, Mg, Ti, Al, and Cr (as their cations). [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-43125","post","type-post","status-publish","format-standard","hentry","category-quiz-questions"],"_links":{"self":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/43125","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/comments?post=43125"}],"version-history":[{"count":1,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/43125\/revisions"}],"predecessor-version":[{"id":43148,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/43125\/revisions\/43148"}],"wp:attachment":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/media?parent=43125"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/categories?post=43125"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/tags?post=43125"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}