Periodic Table Review

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Across
  1. 2. Atomic mass 55.85
  2. 5. Smallest noble gas
  3. 8. 1s2 2s2 2p6 3s2 3p6 4s2 3d3
  4. 9. Atomic number 8
  5. 11. 7 valence electrons
  6. 13. 3 valence electrons
  7. 14. Atomic symbol Ag
  8. 15. One valence electron
Down
  1. 1. Atomic mass 6.94
  2. 3. Atomic mass 9.01
  3. 4. Makes 3 bonds
  4. 6. Atomic number 20
  5. 7. Atomic symbol S
  6. 10. Chemical symbol Na
  7. 12. 4 valence electrons