The spin only magnetic moment value (in Bohr magneton units) of \mathrm{Cr}(\mathrm{CO})_6$ is

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The spin only magnetic moment value (in Bohr magneton units) of \mathrm{Cr}(\mathrm{CO})_6$ is

ChemistryChemical Bonding and Molecular StructureJEE AdvancedJEE Advanced 2009 (Paper 2)

Options:

A
0
B
$2.84$
C
$4.90$
D
$5.92$

Solution:

1294 Upvotes Verified Answer

The correct answer is:
0

$\mathrm{CO}$ is a strong ligand, all the six electron of the valence shell of $\mathrm{Cr}$ is paired and spin only magnetic moment $=0$.

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