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All alkali metals dissolve in anhydrous ...

All alkali metals dissolve in anhydrous liquid ammonia to give blue colour solution. It is the ammoniated electron which is responsible for the blue colour of the solution, and the electrical conductivity is mainly due to ammoniated electron, `[e(NH_3)_y]^-` Dilute solutions are paramagnetic due to free ammoniated electrons, this paramagnetism decreases at higher concentration. Above 3M concentration, the solutions are diamagnetic and no longer blue but are bronze/copper-bronze coloured with a metallic luster. Ammoniated solutions of alkali metals are reducing agents due to the :

A

solvated cation.

B

solvated unpaired electron.

C

the liberation of hydrogen gas

D

(1) and (2) both

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The correct Answer is:
A
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