Element Crossword

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Across
  1. 2. has an atomic number of 5
  2. 5. has an atomic number of 17
  3. 6. the chemical symbol is Si
  4. 7. has an atomic weight of 15.999
  5. 9. has no neutrons
  6. 10. the symbol is P
  7. 12. has 9 protons
  8. 13. has 10 electrons
  9. 14. has an atomic weight of 26.982
  10. 17. the chemical symbol is Na
Down
  1. 1. has 6 protons
  2. 3. has an atomic number of 18
  3. 4. has 4 electrons
  4. 6. has 16 electrons
  5. 8. has 7 electrons
  6. 11. has two protons
  7. 15. has an atomic weight of 6.941
  8. 16. has 12 protons