Neon (Ne) has an atomic number of 10, which means it has 10 protons in its nucleus. The number of electrons in an atom is equal to the number of protons, so a neon atom also has 10 electrons.

The number of neutrons in an atom can vary, depending on the isotope. The most common isotope of neon, neon-20, has 10 neutrons. This means that a neon-20 atom has a total of 10 protons, 10 electrons, and 10 neutrons.