Atomic Structure

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Across
  1. 2. Group 16 period 2
  2. 4. the charge of a neutron
  3. 6. a negatively charged subatomic particle
  4. 7. a positively charged subatomic particle
  5. 8. the number of electrons needed to fill the first ring
  6. 9. there are 18 of these on the Periodic Table
  7. 10. these are columns in the Periodic Table
  8. 12. the mass of the atom in the chart rounded
  9. 13. Group 18, period 2
  10. 17. the charge of a proton
Down
  1. 1. the number of protons in an atom (2 words)
  2. 3. a neutrally charged subatomic particle
  3. 5. there are 7 of these on the Periodic Table
  4. 6. most of the atom is...(two words)
  5. 11. these are rows in the Periodic Table
  6. 14. the center of the atom which has the protons and neutrons
  7. 15. the charge of an electron
  8. 16. the number of electrons needed to fill the second ring