Question

why fluorine is more electro negative than hydrogen?

Answer 1

First reason i know is hydrogen has one shell and one proton, as compared to fluorine with 2 shells and 9 protons.

As electronegativity is the "strength" with which the valence electrons are attracted to the nucleus.

hence fluorine have more electronegativity

. 2nd .:- Fluorineis the most electronegative element because it has 5 electrons in it's 2P shell. The optimal electron configuration of the 2P orbital contains 6 electrons, so since Fluorine is so close to ideal electron configuration, the electrons are held very tightly to the nucleus.