periodic table

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Across
  1. 2. 7th element of the periodic table
  2. 5. 1st element of the periodic table
  3. 7. 18th element of the periodic table
  4. 9. 12th element of the periodic table
  5. 10. 11th element of the periodic table
Down
  1. 1. 14th element of the periodic table
  2. 3. 22nd element of the periodic table
  3. 4. 90th element of the periodic table
  4. 6. 20th element of the periodic table
  5. 8. 2nd element of the periodic table