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Q. In $[Ag(CN)_2]^-$ , the number of $\pi$ bonds is

AIIMSAIIMS 2006Chemical Bonding and Molecular Structure

Solution:

In $Ag \left[( CN )_{2}\right]^{2-}, CN ^{-}$has $\pi$ bonds $C \equiv N$ so two $\pi$-bonds are present in one $CN$ so, the number of $\pi$ bonds are $2 \times 2=4$.