Question

Why Flourine can react in dark with hydrogen whereas not the same case for the other halogens?

Answer 1

Dear Student,

Fluorine can react with hydrogen even in dark while the other halogen atoms donot. This is due to the high affinity of fluorine towards hydrogen. Hydrogen has 1 electron in its outermost shell whereas flourine atom has 7 electrons in its outermost shell. Both hydrogen and fluorine also have comparable size therefore, they share a pair of electron to acquire stable electronic configuration. Also, due to high electronegativity of F, electron of H is easily attracted towards it.