chem extra credit

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Across
  1. 1. - my atomic mass is 52
  2. 3. - __ frequency = long wavelength
  3. 8. - atom or group of atoms with a positive charge
  4. 9. - my atomic number is 80
  5. 10. - my atomic mass is 6.94
  6. 11. - negative charge
  7. 12. - i have 72 protons
  8. 15. - group 7A on the periodic table
  9. 17. - atom or group of atoms with a negative charge
  10. 19. - my element symbol is Zn
  11. 21. - no more than __ electron per orbital
Down
  1. 2. - located left of the staircase
  2. 4. - distance between two crests
  3. 5. - located right of the staircase
  4. 6. - positive charge
  5. 7. - a vertical column on the periodic table
  6. 13. - an atom or group of atoms that have a positive or negative charge
  7. 14. - a horizontal row on the periodic table
  8. 16. - electrons fill this energy level first
  9. 18. - neutral charge
  10. 20. - i have 6 protons