Question

Whydoes hydrogen occur in diatomic state rather than in monoatomic form under normal conditions?

Answer 1

Electronic configuration of hydrogen is 1s and to attain the stability i.e., to acquire the electronic configuration of nearest noble gas helium (1s) hydrogen atoms share their single electron with each other Therefore, hydrogen exist in diatomic and not monoatomic hydrogen

Answer 2

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Atomic Hydrogen is monatomic. Hydrogen has only one electrons so it can form diatomic molecule only.

Now as we know atoms do not exist in free state, they are always present in the form of molecules.

Hence in normal conditions Hydrogen also exist as diatomic molecule.