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  4. Crystal Field Splitting Energy (CFSE) for [ CoCl 6]4- is 18000 cm -1. The Crystal Field Splitting Energy (CFSE) for [ CoCl 4]2- will be

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Q. Crystal Field Splitting Energy (CFSE) for $\left[ CoCl _{6}\right]^{4-}$ is $18000 \,cm ^{-1}$. The Crystal Field Splitting Energy (CFSE) for $\left[ CoCl _{4}\right]^{2-}$ will be

KCETKCET 2022Coordination Compounds

Solution:

$\Delta_{ t }=\frac{4}{9} \Delta_{0}$
$=\frac{4}{9} \times 18000\, cm ^{-1}$
$=8000\, cm ^{-1}$