Sodium metal on dissolution in liquid ammonia gives a deep blue solution due to the formation of :

Sodium metal in liquid ammonia is

Sodium metal dissolves in liquid ammonia and forms a deep blue solution. The colour is due to absorption of light by :

Sodium metal dissolves in liquid ammonia and forms a deep blue solution. The colour is due to absorption of light by :

When sodium metal dissolves in liquid ammonia, it gives a deep blue coloured solution. Explain the reason.

A solution of sodium in liquid ammonia is blue in colour due to:

A solution of sodium in liquid ammonia is blue in colour due to:

Alkali metals dissolve in liquid ammonia to give blue coloured solutions. Why?