Periodic Table Review B

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Across
  1. 5. unreactive elements with 8 valence electrons
  2. 7. a row on the periodic table
  3. 8. diatomic element; sometimes behaves as a metal, sometimes behaves as a nonmetal
  4. 9. diatomic element in Group 5A
  5. 11. metals with 2 valence electrons
  6. 13. only liquid metal
  7. 14. name of the group that contains the element Erbium
  8. 16. type of elements found to the right of the bold, dark line on the periodic table
  9. 20. arranged the elements into groups of three based on shared properties
  10. 21. metals that form ions with a +1 charge
  11. 22. group name of the elements found in the f-block of period 7
  12. 23. noble gas with only 2 valence electrons
Down
  1. 1. type of elements that are malleable, ductile and good conductors of electricity
  2. 2. solid, diatomic element that gains one electron when forming an ion
  3. 3. diatomic element; only liquid nonmetal
  4. 4. said that the properties of the elements repeated every seven elements
  5. 6. element that forms a +2 ion, located in Period 4 of the s-block
  6. 10. groups labeled with a “B” on the periodic table
  7. 12. one of the two names for a column on the periodic table
  8. 13. reordered the elements based on their atomic number rather than atomic weight
  9. 15. one of the two names for a column on the periodic table
  10. 17. metalloid with 4 valence electrons
  11. 18. correctly predicted the existence of elements and their properties
  12. 19. elements that have properties of both metals and nonmetals