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Pick out the correct statement with respect to [Mn(CN)6]3-

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By Expert Faculty of Sri Chaitanya
a
It is sp3 d2 hybridised and tetrahedral.
b
It is d2sp3 hybridised and octahedral.
c
It is dsp2 hybridised and square planar.
d
It is sp3 d2 hybridised and octahedral.

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detailed solution

Correct option is B

Mn(CN)63-  Let oxidation state of Mn be x .  x+6×(-1)=-3x=+3  Electronic configuration of Mn:[Ar]4s23d5  Electronic configuration of Mn3+:[Ar]3d4 CN-is a strong field ligand thus, it causes pairing of   electrons in 3d -orbital.     Thus, Mn(CN)63- has d2sp3 hybridisation and has octahedral geometry.


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Among NiCO4,NiCN42,NiCl42 species, the hybridization states at the Ni atom are, respectively

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