The complex ion having minimum magnitude of `Delta_o(CFSE)` is

Options

A. `[Co(NH_(3))_(6)]^(3+)`
B. `[Cr(H_(2)O)_(6)]^(3+)`
C. `[Cr(CN)_(6)]^(3-)`
D. `[CoCl_(6)]^(3-)`

Answer

D

Explanation

The magnitude of `Delta_(o)` follows the order :
`Cl^(-) lt H_(2)O lt NH_(3)lt CN^(-)`