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  • Which of the following statements are correct? (i) All three N—O bond lengths in HNO_{3} are equal. (ii) All P—Cl bond lengths in PCl_{5} molecule in the gaseous state are equal.

Which of the following statements are correct?

(i) All the three N—O bond lengths in HNO_{3} are equal.

(ii) All P—Cl bond lengths in PCl_{5} molecule in the gaseous state are equal.

(iii) P_{4} molecule in white phosphorus have angular strain therefore white phosphorus is very reactive.

(iv) PCl is ionic in the solid-state in which cation is tetrahedral and the anion is octahedral.

Answers (1)

The answer is the option (iii, iv).
(i) All the N – O bond in HNO_{3} are not of the same bond length.
(ii) In gaseous state, all P – Cl bond lengths in PCl_{5}  molecule are not equal. Axial bond is longer than equatorial bond.
(iii) White phosphorous is more reactive than the other solid phases because of angular strain in the P_{4} molecule under normal conditions.
(iv) In Solid state PCl_{5} exists as ionic solid in which cation is tetrahedral and anion is octahedral.

Cation-\left [ PCl_{4} \right ]^{+}\; \; \; \; \; \; Anion-\left [ PCl_{6} \right ]^{-}

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