The Crystal Field Stabilisation Energy (CFSE) for [CoCl6]4- is 18000 cm-1. The CFSE for [CoCl4]2- will be-

Question

The Crystal Field Stabilisation Energy (CFSE) for [CoCl6]4- is 18000 cm-1. The CFSE for [CoCl4]2- will be- (A) 6000 cm-1 (B) 16000 cm-1 (C) 18000 cm-1 (D) 8000 cm-1

Tardigrade Admin · Accepted Answer

Δ texttetrahedral = (4/9) × Δ textoctahedral = (4/9) × 18000 = 8000 cm-1

Q. The Crystal Field Stabilisation Energy (CFSE) for $[C o C l_{6}]^{4 -}$ is $18000 c m^{- 1}$ . The CFSE for $[C o C l_{4}]^{2 -}$ will be-

$6000 c m^{- 1}$

$16000 c m^{- 1}$

$18000 c m^{- 1}$

$8000 c m^{- 1}$

$Δ_{tetrahedral} = \frac{4}{9} \times Δ_{octahedral}$
$= \frac{4}{9} \times 18000$
$= 8000 c m^{- 1}$

Q. The Crystal Field Stabilisation Energy (CFSE) for [CoCl6​]4− is 18000cm−1. The CFSE for [CoCl4​]2− will be-

6000cm−1

16000cm−1

18000cm−1

8000cm−1