Across
- 3. Is a nonmetal and has 86 electrons
- 5. Has 29 electrons
- 9. Has 123 neutrons
- 10. Metalloid in period 5, group 16
- 12. Is an Actinide with 157 neutrons
- 13. Is in period 5, Group 6
- 15. Period 5, Group 4
Down
- 1. It is a noble gas and is in period 4
- 2. Lanthanide with 67 protons
- 4. Metalloid and also a halogen
- 6. Atomic Mass is 39.098
- 7. Atomic Number is 2
- 8. Has 100 protons
- 11. Strong metal with 22 protons
- 14. Contains 176 Neutrons