Given below are two statements: Statement I: \(\mathrm{N}\left(\mathrm{CH}_{3}\right)_{3}\) and \(\mathrm{P}\left(\mathrm{CH}_{3}\right)_{3}\) can act as ligands to form transition metal complexes. Statement II: As N and P are from same group, the nature of bonding of \(\mathrm{N}\left(\mathrm{CH}_{3}\right)_{3}\) and \(\mathrm{P}\left(\mathrm{CH}_{3}\right)_{3}\) is always same with transition metals. In the light of the above statements, choose the most appropriate answer from the options given below:

(C) Statement I is correct but Statement II is incorrect

(A) Statement I is incorrect but Statement II is correct

(B) Both Statement I and Statement II are correct

(D) Both Statement I and Statement II are incorrect

JEE Main · 2024 · 08 Apr 2024 · Shift 1 · Coordination Compounds

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 same group, the nature of bonding of

N (CH_{3})_{3}

and

P (CH_{3})_{3}

is always same with transition metals.
In the light of the above statements, choose the most appropriate answer from the options given below:

Answer: (C)

Both

N (C H_{3})_{3}

and

P (C H_{3})_{3}

are Lewis bases and can act as ligands (Statement I correct). But their bonding differs:

P (C H_{3})_{3}

is a

π

-acceptor (back-bonding into P), whereas

N (C H_{3})_{3}

is a pure

σ

-donor — so the bonding is not always the same (Statement II incorrect). Option (3).

JEE Main · 2024 · 08 Apr 2024 · Shift 1 · Single correct option