Periodic table crossword puzzle

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Across
  1. 2. Lanthanide element
  2. 6. Nonmetals have____melting point
  3. 7. Metal on period 4 of periodic table
  4. 9. A Nonmetal Halogen
  5. 10. Alkaline Earth Metals oxidize in_______.
  6. 12. Metals______electrons.
  7. 14. Good conductors of heat and electricity
  8. 17. Mendeleev organized the periodic table by similar_____.
  9. 18. The number of the charge depends on how many valance______are lost or received
  10. 20. Extremely soft
  11. 22. Number of electrons on group 17
  12. 25. Metals become_______ions(+),called cations.
  13. 26. Can be shiny or dull
  14. 27. An alkali Earth metal
  15. 28. Noble gases have full______electron shells
Down
  1. 1. Metal on period 4 of periodic table
  2. 3. Recognized that______,not atomic mass, is the basis for the organization of the periodic table.
  3. 4. Transition metals are good________of heat and electricity
  4. 5. Grouped into a row not a column
  5. 8. All of the elements in groups 1,2 and 13-18 have a consistent ion_____pattern that will be produced when transferring electron to form an ionic bond.
  6. 11. A Noble gas element
  7. 13. Most reactive nonmetals
  8. 15. Lewis Dot structures provide a way to visualize an atom`s______and potential to bond.
  9. 16. First person to develop an incomplete periodic table by increasing atom mass.
  10. 19. Actinides are all_______.
  11. 21. An alkali metal
  12. 23. Lanthanides react violently with most_____.
  13. 24. Metal on period 6 of periodic table