The atom in a normal state would have two protons to match the two electrons, making the overall charge zero. If the atom is an ion, it would have an mismatched number of protons and electrons, giving it a positive or negative overall charge.
If you build an atom using two protons, two neutrons and two electrons you would build an atom of Helium. To be more-precise, this would create Helium-4 the common isotope of Helium.
The number of protons in the atom's nucleus and the total number of electrons in the electron shells of that atom.
Protons and electrons.
protons and electrons.
Electrons and protons.
The number of electrons should = the number of protons.
Atom that are anions have two more electrons than it has in protons.
protons, because the protons are positive and the electrons are negative so to have a neutral atom the protons and electrons must be balanced
The number of protons per atom, and the number of electrons per atom.
There're two particles in the atom nucleus (protons and neutrons)
The charge of an atom depends on the electrons compared to protons. Electrons being negatively charged, protons being positive. If there are more protons, the atom is positive, and if there are more electrons, the atom is negative.