That's the opposite of rare. Other elements can bond with diatomic elements to form diatomic molecules. That's how we get table salt (sodium + chlorine = NaCl, sodium chloride). You can find a ...

Bromine is one of only two liquid elements. Iodine is solid. They exist as diatomic molecules - they have two atoms in each molecule. As you go down the group the halogens become less reactive.

This achievement marks a substantial step forward, as previous efforts had primarily focused on diatomic molecules. The ability to trap and cool CaOH to temperatures as low as 20 μK demonstrates ...

Bromine is one of only two liquid elements. Iodine is solid. They exist as diatomic molecules - they have two atoms in each molecule. As you go down the group the halogens become less reactive.