In `[Ag(CN)_2]^(-)`, the number of `pi` bonds is

Options

A. 2
B. 3
C. 4
D. 6

Answer

c

Explanation

Cyanide is connsidered, in a brod sense, to be the most potent ligand for many transition metals.
The very high affinites of metals for cyanide can be attributed to its negative charge, compactness and ability to engage in `pi` bonding.
The dicyanides `[M(CN)_(2)]^(-)(M=Cu,AgAu)` are `-Coverset(1 sigma)underset(2pi)(-=)N-` Thus, two cyanide ions have `4pi` bonds.