Periodic Table Crossword

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Across
  1. 2. The proton number is 6
  2. 3. This is located in the noble gases
  3. 6. This element's atomic number is 23
  4. 7. First on the periodic table
  5. 8. The neutron number is 30
  6. 11. The element symbol is NO
  7. 12. This element is an alkaline earth metal
  8. 13. salt formers
Down
  1. 1. The electron number is 36
  2. 3. This element is a post-transition metal
  3. 4. The atomic number is 32
  4. 5. This element is used to make toothpaste
  5. 9. This is an element that was found in London
  6. 10. This is the first element in group 18