The spin only magnetic moment value (in Bohr magneton units) of $C r (C O)_{6}$ is:

0.0

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2.84

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4.9

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5.92

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Solution

The correct option is A 0.0
In $C r (C O)_{6}$ , the central
$C r$ atom is $d^{2} s p^{3}$ hybridised. Hence all the electrons in its valence shell is paired. So it has a net magnetic moment zero (0 BM).

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