Element Crossword

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Across
  1. 2. Li
  2. 6. Number of groups on the periodic table
  3. 8. Which period of the periodic table corresponds with Lithium (Li)
  4. 10. B
  5. 11. The elements that touch the zigzag line (staircase) of the periodic table
  6. 12. The atomic mass of Neon
Down
  1. 1. Ag
  2. 3. Group seven
  3. 4. Democriticus coined this word
  4. 5. The element with 6 protons
  5. 7. Atom with different number of electrons
  6. 9. Number of periods on the periodic table