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Covalent Bond vs Ionic Bond

Among CaH 2, ...

Question

Among $C a H_{2}, N H_{3}, N a H a n d B_{2} H_{6}$ which are covalent hydride

A

NH₃ and B₂H₆

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B

NaH and CaH₂

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C

NaH and NH₃

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D

CaH₂ and B₂H₆

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Solution

The correct option is A
NH₃ and B₂H₆

$C a H_{2}$ and NaH are saline hydrides due to high difference of electronegativity between the elements. $N H_{3}$ and $B_{2} H_{6}$ are covalent hydrides.

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