Periodic Table

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Across
  1. 2. has a Metallic Luster and Appear to be Metals
  2. 4. alkali metals react with ____ to make strong bases.
  3. 6. gases this group has characteristic colors when excited.
  4. 12. this group has 7 valence electrons.
  5. 15. all are radioactive, have no stable isotopes?
  6. 16. Mendeleev organized the elements in order of increasing atomic
  7. 17. Moseley arranged elements in order of ___ atomic number
  8. 18. is non metals on the left or right side?
  9. 19. who is credited for designing he first periodic table?
  10. 22. tend to gain electrons and form ____ charged ions.
  11. 23. which group has silvery grey metals?
Down
  1. 1. Highly reactive and are not found naturally in their elemental state?
  2. 3. which group has compounds that have different colors?
  3. 5. this element is in the halogens.
  4. 7. react violently with most nonmetals.
  5. 8. Which column is relatively soft?
  6. 9. this element is in the noble gas group.
  7. 10. this element is in the alkali metals group.
  8. 11. metals become ____ ions called cations.
  9. 13. this elhalogensin the halongens group.
  10. 14. which side is the metals on?
  11. 20. They are soft metals that can be cut with a knife.
  12. 21. this element is in the alkaline earth metals.