Hydrogen and oxygen are two of the main elements found in the human body. Hydrogen has an atomic number of 1, and oxygen has an atomic number of 8. Therefore, it can be concluded that

An element’s atomic number equals the number of protons in each atom. Oxygen’s atomic number is 8, so an oxygen atom has 8 protons; hydrogen’s atomic number is 1, so a hydrogen atom has 1 proton. Therefore, oxygen has more protons than hydrogen. Atomic numbers alone do not tell us how much of each element is in the body or how many isotopes each has.

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