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

1. It is sp3d2 hybridised and tetrahedral
2. It is dsp3 hybridised and octahedral
3. It is dsp2 hybridised and square planar
4. It is sp3d2 hybridised and octahedral

Correct answer: It is sp3d2 hybridised and octahedral

Solution

The complex [Mn(CN)6]^3– involves a central Mn3+ ion, which has a d4 electronic configuration. Cyanide (CN–) is a strong field ligand, causing pairing of electrons in the d-orbitals. This leads to sp3d2 hybridization, forming an octahedral geometry.

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