Question

Give reason a transition from metallic or nonmetallic elements is seen on moving from left to right in a Period of the periodic table

Answer 1

no. of electrons in the outer most shell increases as we go from left to right across the table.

hence electron affinity increases.

we know non metals have affinity towards electrons, hence non metallic property increases

therefore there is a transition of metallic to non metallic elements across the table from left to right.