Periodic table

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Across
  1. 5. the columns on the periodic table
  2. 8. point thirty-nine The atomic mass of zinc
  3. 9. the element with the atomic number 2
  4. 11. the number of protons in sulfur is____
Down
  1. 1. the element with the symbol Au
  2. 2. the element with the atomic mass of 70/69.723
  3. 3. the symbol of silver
  4. 4. the element with the atomic number Cu
  5. 6. the rows on the periodic table are called____
  6. 7. the number of neutrons in silver is____
  7. 10. the element with the atomic number 27
  8. 12. Sodium's atomic symbol is___