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Hydrogen gas is an element. It is No. 1. (Atomic Number) in the Periodic Table. It is shown with the symbol ' H ' ; not 'h'.

A compound is a substance that consists of two or more elements. , e.g. water (H2O). or carbon dioxide (CO2).

However, hydrogen gas exists as a diatomic molecule, that is two atoms of hydrogen combined together. It is represented by the chemical symbol ' H2 '.

NB Only the Noble(Inert) gases exist as (Monatomic) single atoms.

All other gases are 'polyatomic'.

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lenpollock

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2w ago

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