Periodic Table Basics Crossword

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Across
  1. 3. A nonmetal with an atomic number of 6.
  2. 6. A metalloid in Period 3.
  3. 7. This element is has 16 protons and is a solid at STP.
  4. 8. A metalloid with an estimated mass number of 11.
  5. 12. The second element in the alkali metals special family.
  6. 13. A nonmetal in family 1.
  7. 15. A member of the actinide series with an estimated A of 238.
  8. 17. The "first in family" halogen.
  9. 18. An alkaline earth metal with an estimated mass number of 24.
  10. 19. A noble gas from the first period..
  11. 20. A common metal with an atomic number of 13.
Down
  1. 1. A halogen whose atom has 17 electrons.
  2. 2. A nonmetal with an estimated mass number of 31.
  3. 3. An alkaline earth metal from period 4.
  4. 4. This noble gases' atoms hold 10 electrons.
  5. 5. An alkaline earth metal with an estimated mass number of 9.
  6. 9. An alkali metal with a Z of 19.
  7. 10. An alkali metal in period 2.
  8. 11. A member of the lanthanide series whose atom has 58 electrons.
  9. 14. A transition metal with an estimated mass number of 56.
  10. 16. The only liquid halogen at STP.