Home Chemistry Co-ordinatios Compounds General The hybridisation of [ Co F6] 3– and [ Co (C…
Chemistry Co-ordinatios Compounds General Single Correct MCQ
Published on: August 13, 2026

The hybridisation of [ Co F6] 3– and [ Co (C2O4)3 ]3 – are :

A
Both sp3d2
B
Both d2sp3
C
sp3d2 and d2sp3 respectively
D
d2sp3 and sp3d2 respectively

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Text Solution

Verified by Experts
The correct answer is:
C

In both complexes the oxidation state of cobalt is +3 with 3d6 configuration. Except [CoF6]3–, all other complexes of cobalt with weak field and strong field ligands are inner orbital complexes and diamagnetic because of higher CFSE.

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