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Valence Bond Theory

If H2O is a w...

Question

If $H_{2} O$ is a weak field ligand, the no. of unpaired electrons in $[M n (H_{2} O)_{6}]^{2 +}$ is

A

2

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B

3

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C

4

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D

5

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Solution

The correct option is D 5
Mn = $3 d^{5} 4 s^{2}$
$M n^{2 +} = 3 d^{5}$
Complex is $s p^{3} d^{2}$ hybridized as $H_{2} O$ is a weak field ligand.

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