9.8 Explain is an inner orbital complex whereas is an outer orbital complex.
Firstly consider :-
The oxidation state of cobalt is +3. So the electronic configuration of it will be d6.
Since (NH3) is a strong ligand so the pairing of electron will be there.
So, it has d2sp3 hybridisation and an inner orbital complex.
The oxidation state of nickel is +3. So its electronic configuration will be d8.
Also (NH3) is a strong ligand so pairing of electrons will be seen.
Thus is an outer orbital complex.
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