Pick out the correct statement with respect to [Mn(CN)₆]³⁻
(a) It is sp³d² hybridised and tetrahedral [2017]
(b) It is d²sp³ hybridised and octahedral
(c) It is dsp² hybridised and square planar
(d) It is sp³d² hybridised and octahedral
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Option (b) is the right answer.
[Mn(CN)₆]³⁻ is d²sp³ hybridized and is octahedral.
It's due to following reasons :
- The oxidation state of Mn( Manganese) is +3 in this complex which is a very important factor.
- Electronic configuration (outer) is 4s03d44p0.
- CN is a strong ion/molecule and it will make one electron from d-orbital bind to another d orbital in this complex.
- Now vacating one more orbital from d shell and two unpaired electrons will be left in d shell.
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