The Periodic Table

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Across
  1. 4. The element with atomic number 26.
  2. 9. A halogen that is a liquid at room temperature.
  3. 10. The elements on the right of the step line are the ____________ .
  4. 13. Elements are arranged based on their ________ number.
  5. 14. The halogens are in Group ________ .
Down
  1. 1. The element with symbol Sn.
  2. 2. Ag is the _________ of silver.
  3. 3. The most reactive alkali metal.
  4. 5. The element with symbol Cu.
  5. 6. The least reactive alkali metal.
  6. 7. The elements on the left of the step line are the __________ .
  7. 8. Dr Van Brussel's favourite element.
  8. 11. A metal but it is a liquid at room temperature.
  9. 12. The element with symbol Pb.
  10. 14. The element with symbol Na.
  11. 15. The elements in Group 8 are called the _______ Gases.