Across
- 1. an electron in the outermost energy level of an atom
- 4. the 8th row has ______ electrons
- 8. number of protons
- 11. the 2nd and 3rd rows have _____ electrons
- 13. the 1st row has _____ electrons
- 14. negatively charged
- 15. any of the possible energies an electron may have in an atom
Down
- 2. positively charged
- 3. number of protons plus neutrons
- 5. protons are __________ charged
- 6. the 4th and 5th rows hace ______ electrons
- 7. equally charged
- 9. two atoms with a different number of neutrons
- 10. electrons are __________ charged
- 12. atom that carries an electrical charge