Question

Given below are two statements:
Statement I: \(N(CH_3)_3\) and \(P(CH_3)_3\) can act as ligands to form transition metal complexes.
Statement II: As \(N\) and \(P\) are from the same group, the nature of bonding of \(N(CH_3)_3\) and \(P(CH_3)_3\) is always the same with transition metals.
In the light of the above statements, choose the most appropriate answer from the options given below:

• A. Statement I is incorrect but Statement II is correct
• B. Both Statement I and Statement II are correct
• C. Statement I is correct but Statement II is incorrect
• D. Both Statement I and Statement II are incorrect

Answer 1

The Correct Option is C

N(CH$_3$)$_3$ and P(CH$_3$)$_3$ both act as Lewis bases and can act as ligands. However, P(CH$_3$)$_3$ has a stronger $\pi$-acceptor character compared to N(CH$_3$)$_3$ due to the availability of d-orbitals in phosphorus, leading to differences in their bonding with transition metals.