For instance, the most common isotope of Hydrogen contains one proton, no neutrons, and one electron.
This isotope is referred to as Protium because its nucleus consists of only one proton.
There exist atoms that have one proton, one neutron, and one electron.
These atoms are of the element Hydrogen based on their proton number, but they are of a different isotope: Deuterium.
However, its number of neutrons and electrons is not defined by its elemental name.
Charge is a rationalization of how subatomic particles interact.
The rules are thus: opposite charges will attract and like charges will repel.
In order to better understand atoms the concept of elements can be applied.
Elements provide a system of classification for all the different types of atoms.
An atom has three major parts: protons, neutrons and electrons.