Atomic number is the number of electron
- Atomic number is the number of electrons
- Is atomic number the number of electrons
- Atomic number is the number of electrons or protons
- Atomic number is equal to the number of electrons in an atom
- Atomic number equal to electrons
- Does atomic number equal the number of electrons
- The atomic number is the same as the number of electrons
- Atomic number equals the number of protons or electrons
- Atomic number protons electrons and neutrons
- Atomic number is the number of protons and electrons true or false
- Atomic number is the number of proton and electron
- Atomic number is equal to the number of electron
- Atomic number represents the number of electrons
- Atomic number is always equal to the number of electrons
- Atomic number refers to the number of electrons in an atom