The blue colour of solution of ammonia and alkali metals is due to which species?

Name the ions present in solution of ammonia and alkali metals.

The blue colour of sky is due to :

The alkali metals are soft due to-

The blue colour of the solution (metal dissolved in liquid ammonia) is due to :

Blue colour of alkali and alkaline earth metals in liquid NH_3 is due to

All alkali metals dissolve in anhydrous liquid ammonia to give blue colour solution. It is the ammoniated electron which is reponsible for the blue colour of the solution, and the electrical conductivity is due to the ammoniated cation, [M(NH_(3))_(x)]^(+) as well as the ammoniated electron, [e(NH_(3))_(y)]^(-) , value of x and y depend on the extent of solvation by NH_(3) . Dilute solutions are paramagnetic due to free ammoniated electrons. Q. Which of the following statement about solution of alkali metals in liquid ammonia is correct?