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