The number of hydrogen atoms of present in a hydrogen molecule are 2.
H is the chemical formula for hydrogen. There are some elements with H in the chemical formula. But the have other letters too.
The chemical formula of carbon is C and the chemical formula of hydrogen is H.
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The chemical formula for hydrogen chlorite is HClO2.
The chemical formula for Hydrogen gas is H2
The Chemical Formula for Hydrogen Chloride is HCl.
By looking at an actual chemical formula for a compound, we could tell you how many hydrogen atoms there are per molecule (or at least per formula unit) of that compound.Without the specific chemical formula, we can't. So the question is meaningless ... how many hydrogen atoms are present in a chemical formula depends on what the chemical formula is.
The chemical formula for hydrogen is H2, and for iodine is I2.
The chemical formula for hydrogen sulfide is H2S.
The chemical formula for phosphorus hydrogen is PH3.
The chemical formula for hydrogen monochloride is HCl.
The chemical formula for hydrogen peroxide is H2O2.