Consider the coordination compound, `[Co(NH_3)_6]Cl_3`. In the formation of this complex, the species which acts as the Lewis acid is:

Options

A. `[Co(NH_3)_6]^(3+)`
B. `Cl^(-)`
C. `Co^(3+)`
D. `NH_3`

Answer

C

Explanation

`[CO(NH_3)_6]Cl_3 to [Co(NH_3)_6]^(3+) + 3Cl^(-)`
`NH_3` acts as lewis base and `Co^(34+)` ion acts as lewis acid in this complex.