The Periodic Table

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Across
  1. 2. What is the name of the chart that organizes elements by atomic number and shared properties?
  2. 4. Who invented the periodic table?
  3. 5. What is the element HG?
  4. 7. Where are the protons and neutrons located?
  5. 8. What are the rows of a periodic table called?
  6. 9. What is the name of a Negative charged particle?
  7. 12. What kind of metal is the far left side of the periodic table?
  8. 15. What element has 79 protons?
  9. 16. What kind of gases is the far right side of the periodic table?
  10. 17. What is found under the symbol on a periodic table?
  11. 19. What is the second element of the periodic table?
  12. 20. What is the name of a positive charged particle?
Down
  1. 1. What has an atomic number of 1?
  2. 3. Atomic Radius from left to right on the periodic table generally?
  3. 6. Where do you find an electron?
  4. 10. What are semi-metals and solid at room temperatures?
  5. 11. What kind of gas has 7 valence electrons?
  6. 13. What is the periodic table mostly made of?
  7. 14. What has an atomic number of 20?
  8. 18. What is the name of a Neutral charged particle?