Atomic number the number of protons
- Atomic number is protons
- Atomic number equals the number of protons or
- Atomic number is the number of protons and electrons
- Atomic number equals the number of protons or electrons
- Is atomic number protons or neutrons
- Atomic number is the number of protons in an atom
- Atomic number protons electrons and neutrons
- Is the atomic number the number of protons in a nucleus
- Atomic number corresponds to the number of protons
- Is the atomic number equal to the number of protons
- Atomic number is the same number of protons
- Does atomic number equal the number of protons
- Atomic number mass number number of protons
- Atomic mass number of protons and neutrons
- How are atomic number and the number of protons related to each other