Atomic Theory & The Periodic Table

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Across
  1. 2. elements with properties that fall between those of metals
  2. 5. another name for columns in the periodic table
  3. 8. elements that form a bridge between the elements
  4. 9. arrangement of electrons in the orbital
  5. 12. possible energies that electrons can have
  6. 13. electron that is in the highest energy level
  7. 16. they have physical differences but similar chemical properties
  8. 17. extremely reactive, found in nature only in compounds
  9. 18. region around the nucleus
Down
  1. 1. soft enough to cut with a knife
  2. 3. the orbital of the first energy level
  3. 4. elements arranged into groups and rows by increasing the mass
  4. 6. pattern of repeating properties
  5. 7. colorless and odorless and extremely unreactive
  6. 10. good conductors of heat
  7. 11. poor conductors of heat
  8. 14. one isotope to serve as a standard
  9. 15. visual model of the most likely locations for electrons in an atom