JEE Main 12 Jan 2019 Morning Question 25

Question: The metal d- orbital that are directly facing the ligands in $ K _3[Co{{(CN)}_6}] $ are [JEE Main Online Paper Held On 12-Jan-2019 Morning]

Options:

A) $ d _{xy}and,{d _{x^{2}-y^{2}}} $

B) $ {d _{xy’}}d _{xz},and,d _{yz} $

C) $ {d _{x^{2}-y^{2}}},and,{d _{z^{2}}} $

D) $ {d _{xy’}}d _{yz},and,{d _{{z^{2.}}}} $

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Answer:

Correct Answer: C

Solution:

  • Due to presence of strong ligand $ (C{N^{-}}) $ pairing occurs in which two d-orbitals i.e., $ {d _{x^{2}-y^{2}}} $ and $ {d _{z^{2}}} $ directly face the -CN ligand.