Why Non Metals Are Electronegative?

Because their valence shells

have the capability of gaining electrons, thus they are mostly electronegative in nature. Eg→ Cl has7 electrons in its outer most shell and thus it can gain 1 electron to be stable, therefore it is an electronegative non-metal.

Are non metals the most electronegative?

Nonmetals have much higher electronegativities than metals; of the nonmetals, fluorine is the most electronegative, followed by oxygen, nitrogen, and chlorine. The larger the difference in electronegativity between two atoms, the more polar the bond between them.

What is electronegative character of non metal?

Elements that tend to gain electrons to form anions during chemical reactions are called non-metals. These are electronegative elements with high ionization energies. They are non-lustrous, brittle and poor conductors of heat and electricity (except graphite).