The absorption maxima of several octahedral complex ions are as follows:
| S.No |
Compound |
λ max nm |
| 1 |
[CO(NH3)6] 3+ |
475 |
| 2 |
[CO(CN)6] 3- |
310 |
| 3 |
[CO(H2O)6] 3+ |
490 |
The crystal field splitting is maximum for :
(a) [CO(H2O)6] 3+
(b) [CO(CN)6] 3-
(c) [CO(NH3)6] 3+
(d) All the complex ions have the same splitting, Δ0,
