1. the number of protons in a atom is
- proton number/atominc number.
- mass number
1 of 5
Other questions in this quiz
2. what atom has the electron configuration 2,8,5
3. which sub-atomic particle has a mass of 1 and no charge
4. what does a nucleus contain?
- protons and neutrons
- electrons and protons
5. A proton is a postive charge
- no charge.