NEET UG CHEMISTRY MCQ: CO-ORDINATION COMPOUNDS

1 Hard

1 of 1

Application +4 | -1

The homoleptic and octahedral complex of

\mathrm{Co}^{2+}

and

\mathrm{H}_{2} \mathrm{O}

has ______ unpaired electron(s) in the

\mathrm{t}_{2 g}

set of orbitals.

View answer and explanation

Correct option: A

Option A (1) is correct because the

Co^{2+}

ion in an octahedral field with weak field ligands like

H_2O

has a

t_{2g}^5 e_g^2

configuration, resulting in one unpaired electron in the

t_{2g}

set.

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