Question

element "A" belongs to 3rd period and group 1 of the modern periodic table.
which element in the group is not metal? ​

Answer 1

Answer:

So, the valency of element A is 1. (iii) Group 1 is on the left side of periodic table and consists of metals. So element A is a metal. (v) Group 1 is to alkali metals, therefore, element A belongs to alkali metal family.