Unit 2

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Across
  1. 2. emits helium nuclei
  2. 4. distance between crests
  3. 9. The mnemonic device that finds the atomic # and mass
  4. 13. gains electrons
  5. 14. a range of all types of radiation that have electric and magnetic fields
  6. 15. spherical shape
Down
  1. 1. elements in column 8A
  2. 3. electrons occupy orbitals of lowest energy first
  3. 5. repeating properties
  4. 6. has 5 orbitals
  5. 7. Bowling Ball Model
  6. 8. this charge is carried by subatomic particles
  7. 10. shiny
  8. 11. most reactive nonmetals
  9. 12. discovered the proton