Explain about the electronegativity and non-metallic character across the period and down the group.

Explanation

Electronegativity `prop` Non-metallic character
(i) As the electronegativity is directly proportional to the non-metallic character, thus across the period, with an increase in electronegativity, the non-metallic character also increases.
(ii) As we move down the group, decrease in electronegativity is accompanied by a decrease in non-metallic character.