Periodic Table Crossword

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Across
  1. 2. alkaline earth metals have a charge of __________
  2. 4. made actinides are known to be ___ ____
  3. 6. Henry Moseley properties by increasing atomic _ _ _ _ _ _
  4. 8. alkaline earth metals have ___ valence electrons
  5. 9. negative ions are called ______
  6. 13. ____ represent electrons
  7. 16. grouped into rows
  8. 17. coloration of alkali metals
  9. 21. noble gases are know as _ _ _ _ _
  10. 22. noble gases express ______ colorations when excited
  11. 23. metals ____ electrons
  12. 25. _____ electrons are the outermost electrons
  13. 26. all radioactive elements
  14. 29. high rate of electron activity
Down
  1. 1. commonly known as _ _ _ _ conductors
  2. 3. often good conductors of heat and energy
  3. 5. who created the first periodic table
  4. 7. Dmitri arranged properties by increasing atomic _ _ _ _
  5. 10. gases include full valence electron shells
  6. 11. alkali metals have a charge of
  7. 12. positive ions are called
  8. 14. alkaline earth metals create bases by reacting with water
  9. 15. _________ often contain properties of metals and non-metals
  10. 18. show high melting and boiling points
  11. 19. halogens have a charge of __________
  12. 20. react violently to non-metals
  13. 24. a common metal property
  14. 27. alkaline earth metals are usually textured _____
  15. 28. react when exposed to air
  16. 30. non-metals ____ electrons