Identify the incorrect statement. NEET Chemistry The p-Block Elements PYQ [2024]

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Q.
Identify the incorrect statement. [2024]

1 ${PEt}_{3}$ and ${AsPh}_{3}$ as ligands can form $dπ - dπ$ bond with transition metals.

2 The N—N single bond is as strong as the P—P single bond.

3 Nitrogen has unique ability to form $pπ - pπ$ multiple bonds with nitrogen, carbon and oxygen.

4 Nitrogen cannot form $dπ - pπ$ bond as other heavier elements of its group.

Ans.
(2)

The single N—N bond is weaker than the single P—P bond because of high interelectronic repulsion of the non-bonding electrons, owing to the small bond length. As a result, the catenation tendency is weaker in nitrogen.

Solution

Q.
Identify the incorrect statement. [2024]

1 ${PEt}_{3}$ and ${AsPh}_{3}$ as ligands can form $dπ - dπ$ bond with transition metals.

2 The N—N single bond is as strong as the P—P single bond.

3 Nitrogen has unique ability to form $pπ - pπ$ multiple bonds with nitrogen, carbon and oxygen.

4 Nitrogen cannot form $dπ - pπ$ bond as other heavier elements of its group.

Ans.
(2)

The single N—N bond is weaker than the single P—P bond because of high interelectronic repulsion of the non-bonding electrons, owing to the small bond length. As a result, the catenation tendency is weaker in nitrogen.

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Solution

Q. Identify the incorrect statement. [2024]

1 PEt3 and AsPh3 as ligands can form dπ–dπ bond with transition metals.

2 The N—N single bond is as strong as the P—P single bond.

3 Nitrogen has unique ability to form pπ–pπ multiple bonds with nitrogen, carbon and oxygen.

4 Nitrogen cannot form dπ–pπ bond as other heavier elements of its group.

Ans. (2) The single N—N bond is weaker than the single P—P bond because of high interelectronic repulsion of the non-bonding electrons, owing to the small bond length. As a result, the catenation tendency is weaker in nitrogen.

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Q.
Identify the incorrect statement. [2024]

1 ${PEt}_{3}$ and ${AsPh}_{3}$ as ligands can form $dπ - dπ$ bond with transition metals.

3 Nitrogen has unique ability to form $pπ - pπ$ multiple bonds with nitrogen, carbon and oxygen.

4 Nitrogen cannot form $dπ - pπ$ bond as other heavier elements of its group.

Ans.
(2)

The single N—N bond is weaker than the single P—P bond because of high interelectronic repulsion of the non-bonding electrons, owing to the small bond length. As a result, the catenation tendency is weaker in nitrogen.