નીચેનામાંથી કયું એક પેરામેગ્નેટિક સંકીર્ણ છે?

$($At. No. $Mo = 42, Pt = 78)$

Question

નીચેનામાંથી કયું એક પેરામેગ્નેટિક સંકીર્ણ છે?

$($At. No. $Mo = 42, Pt = 78)$

NEET 2013, Medium

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Solution

c
Magnetic Moments (spin only)- $\sqrt{n(n+2)}$

where $n=$ number of unpaired electron.

Number of unpaired $e^{-} s$ and corresponding magnetic moments

$1 \rightarrow 1.7$

$2 \rightarrow 2.8$

$3 \rightarrow 3.9$

$4 \rightarrow 4.9$

$5 \rightarrow 5.9$

since $B r^{-}$ is a weak feild ligand, so electrons in $C o^{2+}$ will not pair up.

the complex has $3$ unpaired electrons leaving it paramagnetic in nature.

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