Question

what is the alkali metal in period 3 that dissolves in water giving a strong alkali??

Answer 1

The alkali metal in period 3 is sodium.
It dissolves in water to give a strong alkali NaOH.
Sodium is highly reactive in water and reacts explosively.

Answer 2

Answer:

Alkali metal in period 3 that dissolve in water giving a strong

alkali.