Q5 / 90 · KVPY 2019 (SB/SX) · Chemistry

Alkali metals $(M)$ dissolve in liquid ${NH}_{3}$ to give

A
${MNH}_{2}$
B
$MH$
Correct answer
C
${[M {({NH}_{3})}_{x}]}^{+} + {[e {({NH}_{3})}_{y}]}^{-}$
D
$M_{3} N$

Solution

When alkali metals are dissolved in liquid ammonia, they exist in solution as ammoniated cations after releasing valence electrons, and the released electrons also stay in solution in an ammoniated state. Ammoniation is solvation by ammonia.

Hence, the correct answer is option: 'C'.

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Solution

More s Block Elements Questions

Alkali metals $(M)$ dissolve in liquid ${NH}_{3}$ to give