Periodic Table of Elements

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Across
  1. 3. Period 2, Group 1.
  2. 4. Has properties of both metals and nonmetals and is a semiconductor.
  3. 5. Period 3, Group 18.
  4. 6. Usually shiny, malleable, ductile, and a good conductor of heat and electricity.
  5. 8. A vertical column on the periodic table.
  6. 10. A pure substance made of only one type of atom.
  7. 11. Period 4, Group 1.
  8. 12. Level A region around the nucleus where electrons are found.
  9. 17. A particle with no electrical charge found in the nucleus.
  10. 19. Period 5, Group 11.
  11. 20. Period 2, Group 16.
  12. 22. The center of an atom containing protons and neutrons.
  13. 23. Period 4, Group 4.
Down
  1. 1. Period 4, Group 6.
  2. 2. Period 4, Group 18.
  3. 7. A negatively charged particle found outside the nucleus.
  4. 9. A horizontal row on the periodic table.
  5. 11. Period 6, Group 16.
  6. 13. Usually dull, a poor conductor, and brittle when solid.
  7. 14. A positively charged particle found in the nucleus.
  8. 15. Period 4, Group 2.
  9. 16. The smallest unit of an element that keeps its chemical properties.
  10. 18. Period 1, Group 18.
  11. 21. Period 6, Group 11.