Q45 / 150 · MHT CET 2024 (11 May Shift 1) · Chemistry

What is the number of unpaired electrons present in $\left[\mathrm{CoF}_6\right]^{3-}$ ?

Correct answer
A
4
B
3
C
2
D
1

Solution

Electronic configuration of $\mathrm{Co}^{3+}$ after formation of complex would be

There are 4 unpaired electrons in 3d orbitals.

Hence, the correct answer is option: 'A'.

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