The crystal field stabilization energy (CFSE) for
(CoC16]4 is 9000 cm-?. The CFSE for
[CoC14)2- will be
(A) 6000 cm-1
(B) 4000 cm-1
(C) 2000 cm-1
(D) 8000 cm-1
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1
Answer:
[(CoCl
6
]
4−
and [CoCl
4
]
2−
have octahedral and tetrahedral geometries respectively.
For [(CoCl
6
]
4−
, the CFSE Δ
o
=18000cm
−1
.
The relationship between the crystal field stabilization energies for octahedral and tetrahedral field is Δ
t
=
9
4
Δ
o
.
Substitute value in the above expression.
[CoCl
4
]
2−
=
9
4
×18000cm
−1
=8000cm
−1
.
Explanation:
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