Periodic Table

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Across
  1. 2. Model that shows orbitals
  2. 3. All have 1 valence electron - _____ Metals
  3. 5. Atoms with negative charge
  4. 7. Atoms with positive charge
  5. 9. Who first organized the periodic table?
  6. 10. Atoms of the same element that have different numbers of neutrons and thus different masses
  7. 12. Electrons on the outer orbital
  8. 13. When 2 nonmetals form
  9. 17. Need 1 electron to have full outer orbital
  10. 19. Most accurate model
Down
  1. 1. Who found each element's atomic number?
  2. 3. Have 2 valence electrons - _____ Earth Metals
  3. 4. Dull, brittle, poor conductors, and most are gasses
  4. 6. When Nonmetals bond with metals
  5. 8. Shiny, malleable, ductile, and good conductors
  6. 9. Elements on the staircase of the periodic table
  7. 11. Model that shows valence electrons and the symbol of the element
  8. 14. Unreactive group, outer orbital is full
  9. 15. 2 atoms bonded covalently - _____ Molecule
  10. 16. An atom with a charge
  11. 18. Form when halogens bond with alkalis