The number of protons and neutrons is called
- 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
- The sum of protons and neutrons is called
- The total number of protons and neutrons in an atom is called
- The total number of protons and neutrons in the nucleus is called
- Sum of the number of protons and neutrons in an atom is called
- The total number of protons and neutrons in the nucleus of an atom is called
- The sum of number of protons and neutrons is called
- The number of protons plus neutrons is called
- The sum of total 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
- Same number of protons and neutrons is called
- The amount of protons and neutrons is called