Across
- 5. Metalloid, 6 neutrons
- 8. 47 protons
- 9. 8 protons, period 2
- 10. Nonmetal, noble gas
- 12. Period 4, group 9
- 13. 35 neutrons, group 10
- 14. Atomic mass 23
- 15. Atomic number 57
Down
- 1. Nonmetal, 1 proton
- 2. Nonmetal, halogen, period 3
- 3. 70 electrons
- 4. 58 neutrons
- 6. Metal, transition metal
- 7. Metal, group 1, 19 electrons
- 11. Transition metal,28 electrons