Question

Which is not a pi-acceptor ligands among the following ligands ${\left(C{H}_3\right)}_{3}P,N{O}^{+},C{N}^{-}$and $I_3^{-}?$

• A. $C{N}^{-}$
• B. $I_3^{-}$
• C. ${\left(C{H}_3\right)}_{3}P$
• D. $N{O}^{+}$

Answer 1

Answer: (B)

Correct answer is (b) $I_3^{-}$