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Metal Carbonyls

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Question

White crystalline solid (A) reacts with $H_{2}$ to form a highly associated liquid (B) and a monoatomic colorless gas (C). The liquid (B) is used for etching glass. Compound (A) undergoes hydrolysis slowly to form (C), (B) and a diatomic gas (D) whose IE is almost similar to that of (C). (B) forms an addition compound with KF to form (E) which is electrolyzed in the molten state to form a most reactive gas (F) which combines with (C) in a 1: 1 ratio to produce (A).

The molecule of compound E contains which of the following types of bonds?

A

Ionic

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B

Ionic and Covalent both

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C

Ionic, Covalent and Metallic

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D

Ionic, Covalent and H-bonds

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Solution

The correct option is D Ionic, Covalent and H-bonds
The compound B is $H F$ .
It forms addition compound with $K F$ to form $K H F_{2}$ (compound E).
$H F + K F \to K H F_{2}$
The molecule of compound E contains ionic, covalent, and H-bonds.

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