Quick Question: Explain why hydrogen occurs in a diatomic form rather than a monoatomic form under normal conditions?
Answer: The ionization energy of the hydrogen atom is very high, 1312kJmole-1. For this reason, it is not easy to remove an electron in the hydrogen atom. As a result, its tendency to exist in the monoatomic form is rather low. Instead, hydrogen forms a covalent bond with hydrogen and exists as a diatomic molecule.