Which of the following hydrides conducts electricity?

S i H_{4}

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B_{2} H_{6}

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C H_{4}

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K H

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Solution

The correct option is D $K H$
Molten alkali metal hydrides are ionic and conduct electricity. $K H$ is the alkali metal hydride and a crystalline solid, in molten state it conducts electricity as it possesses $K^{+}$ and $H^{-}$ ions.

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