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Question

The crystal field stabilisation energy of [Co(NH3)6]Cl3 is :

A
7.2Δ0
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B
0.4Δ0
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C
2.4Δ0
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D
3.6Δ0
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Solution

The correct option is C 2.4Δ0
The cobalt ion in [Co(NH3)6]Cl3 undergoes ds2p3 hybridization to form inner orbital or low spin or spin paired complex.
6 electrons are present in t2g level and 0 electrons are present in eg level.
The crystal field stabilization energy of [Co(NH3)6]Cl3 is CFSE=6×(0.4Δ0)+0×(0.6Δ0)=2.4Δ0

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