What kind of chemical bond will occur between 2 halogens?

Answer 1

The four most common halogens: fluorine, chlorine, bromine, and iodine, exist in nature as a covalently bonded diatomic molecule. They each have seven valence electrons, so by sharing one pair of electrons, they can both satisfy the "octet rule" and have eight valence electrons, which is what they want. So the bond is covalent, since they share.

Answer 2

Two halogen atoms, such as chlorine or fluorine, will typically form a covalent bond when they come together. They share electrons to complete their outer electron shells and achieve stability. This results in a molecule with a nonpolar covalent bond between the two halogen atoms.