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Question

NaH is an example of:

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A
Metallic hydride
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B
Electron-rich hydride
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C
Saline hydride
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D
Molecular hydride
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Solution

The correct option is C Saline hydride
Saline hydrides are also called ionic hydride. Metals having electronegativity lower than hydrogen form such hydride. All elements of group 1 and group 2 when heated form ionic hydride. Metallic hydrides are also called interstitial hydride.
sodium being group 1 element forms a saline hydride.
2Na+H22NaH

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