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Question: When sodium is dissolved in liquid ammonia, a solution of deep blue colour is obtained. The colour o...

When sodium is dissolved in liquid ammonia, a solution of deep blue colour is obtained. The colour of the solution is due to.

A

Ammoniated electron

B

Sodium ion

C

Sodium amide

D

Ammoniated sodium ion.

Answer

Ammoniated electron

Explanation

Solution

: The blue colour of the solution is due to the ammoniated electron which absorbs energy in the visible region of light and thus imparts blue colour to the solution.

M+(x+y)NH3→[M(NH3)x]++[e(NH3)y]−M + (x + y)NH_{3} \rightarrow \lbrack M(NH_{3})_{x}\rbrack^{+} + \lbrack e(NH_{3})_{y}\rbrack^{-}