Periodic Table Project Puzzle D

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Across
  1. 6. A nonmetal found on the periodic table
  2. 10. These types of elements are brittle
  3. 11. An atom or molecule that has a net electrical charge from gaining or losing electrons
  4. 15. Are very stable and unreactive due to a full outer electron shell
  5. 16. Organized the periodic table by increasing atomic mass
  6. 18. These types of elements are shiny
  7. 21. Are a series of reactive rare earth metals with similar properties
  8. 23. A halogen found on the periodic table
  9. 25. Semiconductors of heat and electricity
  10. 26. This group has elements in all three phases of matter at room temperature
  11. 27. This group has elements not found alone in nature
  12. 29. Nonmetals become more reactive as you go ____ a group.
  13. 30. An actinide found on the periodic table
Down
  1. 1. Number of valence electrons for Xenon.
  2. 2. A metal found on the periodic table in period three
  3. 3. This group has elements that are all radioactive
  4. 4. Developed the first periodic table but did not get credit for incompleteness
  5. 5. This group has multiple oxidation states
  6. 7. The charge on an Aluminum ion.
  7. 8. A noble gas found on the periodic table
  8. 9. Positively charged ions are called _______.
  9. 12. Electrons in the outermost shell of an atom
  10. 13. Are silvery metals with one valence electron
  11. 14. An alkaline earth metal found on the periodic table
  12. 17. A transition metal found on the periodic table in period four
  13. 19. A metalloid found on the periodic table
  14. 20. Alkali metals react with ______ to form strong bases
  15. 22. Type of bond formed by the transfer of valence electrons between a metal and a nonmetal
  16. 24. A lanthanide found on the periodic table
  17. 25. Organized the periodic table by increasing atomic number
  18. 28. An alkali metal found on the periodic table