The number of protons and neutrons combined is called
- The total number of protons and neutrons is called
- The number of protons and neutrons in an atom is called
- 3 the number of protons and neutrons combined is called the
- The number of protons and neutrons is called
- The combined number of protons and neutrons in an elements is called
- The sum of number of protons and neutrons is called
- The number of protons and neutrons of an element is called
- The number of protons and neutrons in the nucleus is called
- The number of protons plus neutrons is called
- The combined number of protons and neutrons in a single atom is called its atomic
- The combined number of protons and neutrons in the nucleus of an atom is called its