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Identify the incorrect statement [Re-NEET 2024]

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Identify the incorrect statement

[Re-NEET 2024]

a

\(PEt _3\) and \(AsPh _3\) as ligands can form \(d \pi- d \pi\) bond with transition metals.

b

The \(N - N\) single bond is as strong as the \(P - P\) single bond.

c

Nitrogen has unique ability to form \(p \pi- p \pi\) multiple bonds with nitrogen, carbon and oxygen.

d

Nitrogen cannot form \(d \pi- p \pi\) bond as other heavier elements of its group.

✓ Correct answer: b)

The \(N - N\) single bond is as strong as the \(P - P\) single bond.

Explanation

The N–N single bond is generally weaker than the P–P single bond. The reason for this is:

Nitrogen has a small size, due to which lone pair–lone pair electron repulsion is greater, making the bond unstable.

On the other hand, phosphorus has a larger size, due to which the distance between the electrons is greater, and the bond is relatively more stable.

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