63X 64,65 :)

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Across
  1. 2. : Number used to identify an element.
  2. 6. : Property that allows metals to be pulled into wires.
  3. 9. : Horizontal rows on the periodic table.
  4. 12. : Diagram showing valence electrons around an atom.
  5. 16. : Group that contains elements often used in wires and jewelry.
  6. 19. : Elements that are usually dull, brittle, and poor conductors.
  7. 20. : Ability of a material to transfer heat or electricity.
  8. 21. : Negatively charged ion.
  9. 22. : Radioactive metals including uranium and plutonium.
  10. 23. : How electrons are arranged around the nucleus.
  11. 25. : Scientist who rearranged the table by atomic number.
  12. 26. : Group 18 elements that are stable and rarely form compounds.
  13. 27. : Vertical columns on the periodic table.
  14. 28. : Property that allows metals to be hammered into thin sheets.
  15. 29. : Substance made of one type of atom.
  16. 30. : Group 17 elements that are highly reactive nonmetals.
Down
  1. 1. : Electrons in the outermost energy level.
  2. 3. : Scientist who created the first widely accepted periodic table.
  3. 4. : Rare-earth metals used in electronics and strong magnets.
  4. 5. : Group 1 elements that are extremely reactive, especially with water.
  5. 7. : Bond formed when electrons transfer between atoms.
  6. 8. : Most reactive nonmetal.
  7. 10. : Group 2 metals that are reactive but less so than Group 1.
  8. 11. : Elements with properties of both metals and nonmetals.
  9. 13. : Rule that atoms want eight electrons in their outer shell.
  10. 14. : How easily an element combines with other elements.
  11. 15. : Positively charged ion.
  12. 17. : Property Mendeleev used to originally arrange the periodic table.
  13. 18. : Elements that are typically shiny, conductive, and malleable.
  14. 24. : Two electrons shared or bonded together.