Among CaH2,...

Question

Among $C a H_{2}, N H_{3}, N a H$ and $B_{2} H_{6}$ , which are covalent hydrides?

N H_{3}

and

B_{2} H_{6}

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N a H

and

C a H_{2}

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N a H

and

N H_{3}

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C a H_{2}

and

B_{2} H_{6}

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Solution

The correct option is A $N H_{3}$ and $B_{2} H_{6}$
$N H_{3}$ and $B_{2} H_{6}$ are the covalent hydrides and $C a H_{2}$ and $N a H$ are the ionic hydride.
$N$ and $B$ form covalent hydride as they have high electronegativity and small size.

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