The Periodic Table of Elements (PTE)

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Across
  1. 3. This prefix means four
  2. 8. The element that is essential for us to breathe
  3. 10. Elements in group zero are said to be stable and?
  4. 14. is the number of electrons gained or lost when an element combines with another element
  5. 15. positively charged ion
  6. 16. The 96th Element of the PTE
  7. 18. Gas used in advertisement signs
  8. 19. represents the proportions, by mass, of the different elements in a compound.
Down
  1. 1. Group zero is known as the
  2. 2. N2Cl7, What is my name?
  3. 4. Virtues for the term are patience and ______
  4. 5. This color was once exclusively worn by royals
  5. 6. Non-metals are found on the ___ side of the PTE
  6. 7. Negatively charged ion
  7. 9. Noble gas used to treat Cancer
  8. 11. The vertical columns in the periodic table
  9. 12. The group VI elements in the PTE
  10. 13. The only metal that is liquid at room temperature
  11. 17. The horizontal rows of the periodic table
  12. 20. The name of the Group 1 elements