The amount of protons and neutrons is called
- The sum of protons and neutrons is called
- The total number of protons and neutrons is called
- The combined number of protons and neutrons is called
- The amount of protons and neutrons in the nucleus is called what number
- The amount of protons and neutrons in an atom is called
- The number of protons and neutrons is called
- The number of protons in an atom identifies it as an atom of a particular element