The Periodic Table, Puzzle 1

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Across
  1. 2. It has 5 protons and 5 electrons
  2. 4. Atomic Symbol for Iron
  3. 9. Atomic mass is 22.989770
  4. 10. It has 79 protons and 79 electrons
  5. 13. Atomic Number is 2
  6. 14. Atomic Symbol for Nickel
  7. 15. Atomic Number is 12
Down
  1. 1. Atomic mass is 39.0983
  2. 3. It has 4 protons and 4 electrons
  3. 5. Atomic Number is 10
  4. 6. It has 20 protons and 20 electrons
  5. 7. Atomic Symbol is Li
  6. 8. Atomic Symbol for Silver
  7. 11. Atomic Symbol is Cu
  8. 12. Atomic mass is 15.994