Question

Fluorine is more reactive than chlorine and bromine.why?

Answer 1

For example chlorine is less reactive than fluorine because the outer electrons in a chlorine atom are further from the nucleusthan the outer electrons in a fluorine atom. It is harder for a chlorine atom to gain an electron than it is for a fluorine atom.

Answer 2

because....
is is a property of non metals in a periodic table..

In Halogen group.

electronegetivity is decreases while going down in a group..
thus upper element shows high reactivity power...
hence..Flourine is more reactive than clorine and bromine...