PERIODIC TABLE REVISION

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Across
  1. 4. The symbol for argon (lower case letters).
  2. 6. Element in group and a metal.
  3. 7. Metal number 82.
  4. 8. Element with symbol Na.
  5. 9. Copper conducts electricity as a ______.
  6. 10. ____ are on the left of the Periodic Table.
  7. 13. The symbol for magnesium (lower case letters).
  8. 14. Scientist ______ Urey discovered heavy hydrogen.(Google).
  9. 15. Fritz ______ synthesized ammonia. (Google)
  10. 16. Element number 52.
  11. 17. This is the symbol for osmium.
Down
  1. 1. A commonly used metal mined fro its ore (V)
  2. 2. The vertical columns are called _____
  3. 3. The elements are ordered according to their ____
  4. 5. Dmitri _____ organised the Periodic Table together.
  5. 11. Neutral atoms have the same amount of protons and ______.
  6. 12. Mercury is a _____ metal element.
  7. 15. One of the noble gases.