Periodic Table

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