Question

how do the following property vary in periodic and in a group of periodic table 1) electropositive 2) atomic radius​

Answer 1

Heya Friend,

Well Talking about the Following Trends:-

1) Electropositivity:- In a period, since there is increase in ionization energy along a period, electropositivity decreases in a period, Whereas in a group electropositivity increases because ionization energy decreases when going downwards in a group.

2). Atomic Radius:- Since the number of electrons increases, the number of energy levels increases as you move down a group, hence the atomic radius increases down the group. And as we move further in a period, atomic radius decreases because of the factor of higher effective nuclear charge that pulls the electrons closer to the nucleus that results in a smaller atomic radius as a conclusion of atomic radii trend across the period.

Hope it helps...