The molecule that shows two atoms of hydrogen (H) is 2H₂O (2 cap h sub 2 cap o).
In this case, "2H₂O" means there are 2 molecules of water, and each water molecule (H₂O) contains two hydrogen atoms. Therefore, there are a total of 2 x 2 = 4 hydrogen atoms.
However, if you are looking for just a single molecule with two hydrogen atoms, then any instance of H₂ (which is not listed) would apply, but since the options provided are more complex, the previous breakdown leads us to consider how they relate to the actual question.
If you're looking for simplicity, then the molecule "2H₂O" included H₂ as part of its formula indicating that there are hydrogen atoms present in the equation.
If it is specifically 2 atoms of hydrogen in a single molecule, none of the molecules you listed represent just 2 hydrogen atoms alone unless you focus on H₂ (not provided).
Thus, the focus would be on meaning if referring simply to the equation of how many H atoms are implied.
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