The number of protons in an atom determines its atomic number and defines what element it is. To determine if one atom has more protons than another atom, you need to compare their atomic numbers.
The atomic number of an atom corresponds to the number of protons in its nucleus. For example, hydrogen has an atomic number of 1 because it has one proton in its nucleus, while helium has an atomic number of 2 because it has two protons.
You can find the atomic number of an atom on the periodic table of elements. The periodic table lists elements in order of increasing atomic number. By comparing the atomic numbers of two atoms, you can determine which one has more protons.
It's important to note that the number of protons determines the identity of the element, while the number of neutrons can vary within the same element, resulting in different isotopes of that element.