Across
- 1. electrons-an electron in the outermost energy level of an atom.
- 5. Weight - average mass of the naturally
- 6. number- number of protons
- 8. have no electrical charge
- 9. carries an electrical charge is called an
Down
- 2. level- any of the possible energies
- 3. tiny,very light particles
- 4. much larger and heavier than elections
- 6. mass number- equal to the number of protons plus
- 7. less electron than proton =(+) positive charge;