Question:
The spin only magnetic moment value (in $ $B.M.$ $ unit) of $ Cr(CO)_{6} $ is
The spin only magnetic moment value (in $ $B.M.$ $ unit) of $ Cr(CO)_{6} $ is
Updated On: Aug 15, 2022
- $0$
- $ 2.84 $
- $ 4.90 $
- $ 5.92 $
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The Correct Option is A
Solution and Explanation
In $Cr(CO)_{B}$, $Cr$ is present as $Cr^{0}$
$Cr$ or $Cr^{0}=[Ar] 3d^{5} \, 4S^{-1}$
$CO$ being strong field ligand pair up the unpaired electrons of $Cr$
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Concepts Used:
Coordination Compounds
A coordination compound holds a central metal atom or ion surrounded by various oppositely charged ions or neutral molecules. These molecules or ions are re-bonded to the metal atom or ion by a coordinate bond.
Coordination entity:
A coordination entity composes of a central metal atom or ion bonded to a fixed number of ions or molecules.
Ligands:
A molecule, ion, or group which is bonded to the metal atom or ion in a complex or coordination compound by a coordinate bond is commonly called a ligand. It may be either neutral, positively, or negatively charged.