The Periodic Table

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Across
  1. 2. Created the first official periodic table
  2. 4. Have full valence electron shells, nonreactive.
  3. 6. This element is a Lanthanide
  4. 8. This element is an Actinide
  5. 10. The number of dots a Lewis Dot Structure for Flourine would have.
  6. 11. Metals _____ electrons to form ions, what is the other term for (lose)
  7. 15. This element is an Alkaline Earth Metal
  8. 16. All are radioactive, man made, and grouped into a row not a column
  9. 18. Copper is this type of element
  10. 19. two valence electrons, not found alone in nature
  11. 22. This element is a Halogen
  12. 24. The chemical property that determines how elements will react with other elements to form compounds
  13. 27. One valence electron, silvery gray metals
  14. 28. Ductile and malleable, good conductors, compounds have different colors.
  15. 29. This group are the most reactive metals on the periodic table.
Down
  1. 1. This element is a Noble Gas
  2. 3. Rare earth metals, have high melting and boiling points.
  3. 5. This element is an Alkali Metal
  4. 7. Hydrogen is this type of element
  5. 9. Are brittle, dull,and are poor conductors of heat and electricity
  6. 12. This element is a Transition Metal in period 4
  7. 13. Arranged elements in order of increasing atomic number
  8. 14. Valence electrons are the electrons in the ________ energy level
  9. 17. Metals become positive ions, called these
  10. 18. These are good conductors of heat and electricity;shiny
  11. 20. The current Periodic table is organized by this increasing physical feature
  12. 21. Seven valence electrons, most reactive nonmetals.
  13. 23. These type of elements are semiconductors
  14. 25. Boron is this type of element
  15. 26. Nonmetals _____ electrons to form ions, what is the other term for (give)
  16. 30. Nonmetals become negative ions, called these