The sum of protons and neutrons in a nucleus
- The sum of protons and neutrons in a nucleus is called
- The sum of the number of protons and neutrons in a nucleus
- The sum of protons and neutrons in an atom's nucleus
- Atomic number is sum of protons and neutrons in the nucleus
- What does the sum of protons and neutrons in a nucleus indicate
- The sum of protons and neutrons in an atom's nucleus is its
- The sum of protons and neutrons in the nucleus of an atom is called
- Equal to the sum of protons and neutrons in nucleus
- The sum of protons and neutrons in the nucleus of an atom is known as
- The sum of protons and neutrons around the nucleus
- The sum of protons and neutrons inside the nucleus
- The sum of all protons and neutrons in an atom's nucleus
- The sum of protons plus neutrons in the nucleus
- The sum of the protons and neutrons contained in a nucleus is the
- The sum of protons and neutrons present in the nucleus of an atom