The $\Delta_0$ value of $\mathrm{[Ni(H_2O)_6]^{2+}}$ is 8500 $\mathrm{cm^{-1}}$. The $\Delta_0$ values for $\mathrm{[NiCl_6]^{4-}}$ and $\mathrm{[Ni(NH_3)_6]^{2+}}$ compared to $\mathrm{[Ni(H_2O)_6]^{2+}}$ are
(a)higher and lower, respectively
(b)lower and higher, respectively
(c)higher in both complex ions
(d)lower in both complex ions.
Answer
SELF-PRACTICE — the source book printed no answer.
Nothing is invented here, so this question has no answer on record.