Across
- 3. This element is 2nd in the 14th column
- 5. This has 4 valence electrons
- 7. Has a +1 charge
- 11. This a nonmetal and was discovered in 1798
- 12. This element has a mass charge of 10.81
Down
- 1. This element is flammable with 16 protons
- 2. This element has a charge of -3 and sits in the 3rd row
- 4. This element is used in pools
- 6. This element has 3 valence electrons and can be recycled
- 8. Has the most ionization energy
- 9. Is really #1!
- 10. This is the 3rd noble gas