Which of the following complex ion is the most stable?

Options

A. `[Co(NH_3)_6 ]^(3+)`
B. `[CoCl_6]^(3-)`
C. `[CoF_6]^(3-)`
D. `[Co(H_2 O)_6]^(3+)`

Answer

A

Explanation

`NH_3` is strongest ligand amongs the following `Co^(+3)` complexes.