Question

How do the following properties vary in a period and in a group of a periodic table 1 electro positivity 2 atomic radius

Answer 1

Electropostive can be defined as the energy required to remove an electron from the isolated gaseous atom to convert it into positive charge ion. As in periods Atomic no. decreses and nuclear pull increases. therefore, Electropositive increases.

In groups atomic size increases and nuclear pull decreases. therefore. Electropositive decreases in groups

Atomic radius can be defined as the distance from the centre of radius to the outermost shell.