{"id":28391,"date":"2025-06-20T12:11:13","date_gmt":"2025-06-20T12:11:13","guid":{"rendered":"https:\/\/gaviki.com\/blog\/?p=28391"},"modified":"2025-06-20T12:11:15","modified_gmt":"2025-06-20T12:11:15","slug":"xeo-a-o-no-b-co-co-ni-co-co-c-cl-s-cl-d","status":"publish","type":"post","link":"https:\/\/gaviki.com\/blog\/xeo-a-o-no-b-co-co-ni-co-co-c-cl-s-cl-d\/","title":{"rendered":"Xe=O A. [O-N=O]^{-} B. CO | CO-Ni-CO CO C. Cl-S-Cl D."},"content":{"rendered":"\n<p>Xe=O A. [O-N=O]^{-} B. CO | CO-Ni-CO CO C. Cl-S-Cl D.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"750\" height=\"750\" src=\"https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/image-90.png\" alt=\"\" class=\"wp-image-28395\" srcset=\"https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/image-90.png 750w, https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/image-90-300x300.png 300w, https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/image-90-150x150.png 150w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/figure>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-light-green-cyan-color\">The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n<p>The correct answer is <strong>C. CO | CO\u2013Ni\u2013CO CO<\/strong>, which represents <strong>nickel tetracarbonyl, Ni(CO)\u2084<\/strong>.<\/p>\n\n\n\n<p>Nickel tetracarbonyl is a neutral, volatile organometallic compound where a nickel(0) center is bonded to four carbon monoxide ligands through coordinate covalent bonds. Each CO ligand donates a lone pair from its carbon atom to the vacant orbitals on nickel. This forms a tetrahedral geometry with 109.5\u00b0 bond angles, minimizing electron pair repulsion and contributing to the compound\u2019s stability.<\/p>\n\n\n\n<p>This molecule is of particular interest in inorganic and organometallic chemistry. It is diamagnetic and adheres to the 18-electron rule, which provides additional thermodynamic stability. Nickel in its zero oxidation state gains 8 electrons from the four CO ligands, completing its valence shell. The bonding involves both \u03c3-donation from CO to nickel and \u03c0-backbonding from filled metal d-orbitals into the vacant \u03c0* antibonding orbitals of CO. This synergistic interaction weakens the C\u2013O bond within each ligand but strengthens the overall metal-ligand bond.<\/p>\n\n\n\n<p>Ni(CO)\u2084 is industrially significant in the Mond process, where it facilitates the purification of nickel. It is also important in catalysis and coordination chemistry as a prototype for studying metal\u2013ligand interactions.<\/p>\n\n\n\n<p>Let us briefly consider why the other options are not correct:<\/p>\n\n\n\n<p>A. [O\u2013N=O]\u207b refers to the nitrate ion, but this simplified representation overlooks its resonance structures and planar geometry. The nitrate ion is best described as a hybrid of multiple forms.<\/p>\n\n\n\n<p>B. Xe=O is ambiguous, as xenon typically forms oxides like XeO\u2083 or XeO\u2084, not a single double bond to oxygen.<\/p>\n\n\n\n<p>D. Cl\u2013S\u2013Cl refers to sulfur dichloride, which is indeed a real compound with a bent shape, but it lacks the coordination complexity and ligand field interactions present in nickel tetracarbonyl.<\/p>\n\n\n\n<p>Thus, Ni(CO)\u2084 stands out as the most structurally and chemically sophisticated option.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"852\" height=\"1024\" src=\"https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner8-211.jpeg\" alt=\"\" class=\"wp-image-28401\" srcset=\"https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner8-211.jpeg 852w, https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner8-211-250x300.jpeg 250w, https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner8-211-768x923.jpeg 768w\" sizes=\"auto, (max-width: 852px) 100vw, 852px\" \/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Xe=O A. [O-N=O]^{-} B. CO | CO-Ni-CO CO C. Cl-S-Cl D. The Correct Answer and Explanation is: The correct answer is C. CO | CO\u2013Ni\u2013CO CO, which represents nickel tetracarbonyl, Ni(CO)\u2084. Nickel tetracarbonyl is a neutral, volatile organometallic compound where a nickel(0) center is bonded to four carbon monoxide ligands through coordinate covalent bonds. Each [&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-28391","post","type-post","status-publish","format-standard","hentry","category-quiz-questions"],"_links":{"self":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/28391","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=28391"}],"version-history":[{"count":1,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/28391\/revisions"}],"predecessor-version":[{"id":28405,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/28391\/revisions\/28405"}],"wp:attachment":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/media?parent=28391"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/categories?post=28391"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/tags?post=28391"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}