Coordination CompoundHardBloom L1

Question

Which of the following statements is correct?

Options

A.[CoF6]3– and [Co(NH3)6]3+ both are paramagnetic complexes.
B.[CoF6]3– and [Co(NH3)6]3+ both are high spin complexes.
C.[CoF6]3– is octahedral while [Co(NH3)6]3+ has a pentagonal pyramid shape.
D.[CoF6]3– is outer orbital complex while [Co(NH3)6]3+ is inner orbital complex.

Solution

Sol. [CoF6]–3 ⇒ Co+3 = 3d6 ⇒ F– is a W.F.L. → outer orbital complex

[Co(NH3)6]+3 ⇒ Co+3 = 3d6 ⇒ NH3 is a S.F.L. → inner orbital complex

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