The valence electron in alkali metal is a

The tendency to lose their valence electron easily by alkali metals makes them :-

The valency of alkali metals is ___________.

An element X belongs to 3 rd period and Group 2 of the periodic table . State ( a) The no . Of valence electrons (b ) The valency (c ) Whether it is metal or a non- metal

In a period, from the left to right the electron affinity , increases, but alkaline earth metals have lower electron affinity than alkali metals because

Assertion (A) : Alkali metals form ionic hydrides. Reason (R) : Alkali metals lose their valence electron which is accepted by hydrogen to form hydride ion.