periodic table

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Across
  1. 1. Highest energy
  2. 4. relatively soft
  3. 8. wrote a textbook that included an abbreviated version of a periodic table that contained 28 elements.
  4. 9. metals become _____ ions
  5. 10. Colorless, odorless, tasteless
  6. 11. Nonmetals ____ ions
  7. 14. shiny
  8. 15. actinides
  9. 17. Grouped into a row not a column
  10. 20. halogens have ___ electronegativity
  11. 23. Found in earths crust
  12. 26. Valence electrons are __?
  13. 27. was the first person who developed a periodic table by increasing atomic mass
  14. 28. Nonmetals
Down
  1. 2. halogens
  2. 3. this element is in the halogens group.
  3. 5. metals ___ ions
  4. 6. provide a way to visualize an atom’s structure and potential to bond
  5. 7. Dull
  6. 8. Credited for the first periodic table.
  7. 12. also known as "rare earth metals"
  8. 13. When metals and nonmetals chemically bond together, ions are formed from a transfer of electrons.
  9. 16. Transition metals
  10. 18. silvery gray
  11. 19. can contain properties of metals and nonmetals
  12. 21. Noble Gases
  13. 22. alkaline earth metals
  14. 24. most reactive nonmetals
  15. 25. Lanthanides