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NEET levelSingle correct optionDifficulty 1 of 3sb036

A dilute solution of an alkali metal in liquid ammonia conducts electricity because it contains

A $M X^{+}$ and $OH X^{-}$ ions
Blarge amounts of $NH X_{4} X^{+}$ and $NH X_{2} X^{-}$
Conly undissociated metal atoms
Dammoniated metal cations and ammoniated electrons

Answer: D

The metal ionises as

M + (x X^{+} y) NH X_{3} [M (NH X_{3}) X_{x}] X^{+} + [e (NH X_{3}) X_{y}] X^{-}

. Both the ammoniated cation and the ammoniated electron carry current. No

OH X^{-}

is formed because the solvent is ammonia, not water.

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