Why group 2 elements are harder than alkali metals?

In the light of metallic bonding account for the following properties of group 2 elements. a. These are harder than alkali metals b. These are good conductors of heat and electricity.

What are alkali metals?

Why are group I elements called alkali metals and group 17 are called halogens ?

Why are group 1 elements called alkali metals?

Name ay four alkali metals.

Why is second ionisation energy of alkali metals higher than alkaline earth metals?

In a given period, the alkali metals have: