Why does electronegative decrease down a family?

Answer 1

As we move down a family,although nuclear charge(proton number)increases,the number of shells increases.This make the outermost electrons far away from nucleus and electrons feel less attracted to the nucleus.SO electron negativity decreases.It is opposite to first ionization energy where it is easier to ionize electrons as we move down a family.On the contrary,it is difficult to attract electrons.

Answer 2

Electronegativity decreases down a group because as you move down the Periodic Table, the atomic size increases, resulting in a higher distance between the valence electrons and the nucleus. This increase in distance decreases the attractive forces between the nucleus and the valence electrons, leading to a decrease in electronegativity.