Question

The physical and chemical properties of group 1 andgroup 2 elemnets

Answer 1

the group 1 elements are alkali metals as they are highly reactive in nature like lithium, potassium, sodium etc.
the group 2 elements are alkali earth metals as they are not much reactive as alkali metals like beryllium, magnesium etc.

Answer 2

Group 1 elements are alkali metals.

They are very reactive.

Ex. Lithium, sodium, potassium

Group 2 elements are alkali earth metals.

They are comparatively less reacrive

Eg. Calcium, beryllium