Question

why chlorine atom has higher electro negativity value than bromine atom pls help sir​

Answer 1

Answer:

Chlorine atom is small when compared to Bromine because Chlorine has only 3 shells around nucleus whereas bromine has 4 shells. Due to the small size of chlorine atom, the nuclear force of attraction is more which tends to attract electrons towards itself resulting in more electronegativity.

This is what you want Sir.