The alkali metals react with most non-metals to form hydrides, oxides, sulphides, carbides, phosphides and other compounds. The binary compounds of all alkali metals are ionic with M^(+) cations. The alkali metals easily ionize and readily reduce hydrogen ions. They react with ammonia to evolve hydrogen and form blue coloured solutions. 2M(s) + 2H_2O (l) to 2MOH(aq) + H_2(g) 2M(s) + 2NH_3 (l) to 2MNH_2(am) + H_2(g)Why do alkali metals dissolve in liquid ammonia to give blue coloured solutions ?

The alkali metals react with most non-metals to form hydrides, oxides,

1.	The alkali metals react with most non-metals to form hydrides, oxides, sulphides, carbides, phosphides and other compounds. The binary compounds of all alkali metals are ionic with M^(+) cations. The alkali metals easily ionize and readily reduce hydrogen ions. They react with ammonia to evolve hydrogen and form blue coloured solutions. 2M(s) + 2H_2O (l) to 2MOH(aq) + H_2(g) 2M(s) + 2NH_3 (l) to 2MNH_2(am) + H_2(g)Why do alkali metals dissolve in liquid ammonia to give blue coloured solutions ?
Answer» Solution :The ammoniated ELECTRONS are RESPONSIBLE for thebluecolour of the solution . `M+(x+y)NH_3 to [M(NH_3)_x]^(+)+ UNDERSET("Ammoniated electrons")([E(NH_3)_y]^(-)`