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(C) When an alkali metal dissolves in liquid $NH_3$,it forms a blue-coloured,conducting solution due to the presence of ammoniated electrons $(e^-(NH_

Vedclass · Accepted Answer

The conducting nature of the solution is only due to the presence of solvated electrons.

Vedclass · Answer

(C) When an alkali metal dissolves in liquid $NH_3$,it forms a blue-coloured,conducting solution due to the presence of ammoniated electrons $(e^-(NH_3)_x)$ and ammoniated metal ions $(M^+(NH_3)_y)$.$1$. Dilute solutions are blue and paramagnetic due to solvated electrons.$2$. Concentrated solutions become bronze-coloured and exhibit metallic lustre.$3$. The conductivity is due to both solvated electrons and solvated metal ions,not just electrons.$4$. The blue colour is stable in the absence of impurities,but it slowly decomposes to form metal amides $(MNH_2)$ and $H_2$ gas.$5$. The metal can be recovered by the evaporation of ammonia.

Select the $INCORRECT$ statement regarding the solution of an alkali metal in liquid $NH_3$?

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