Atoms

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Across
  1. 4. 8th element of the periodic table
  2. 6. Subatomic particles within the nucleus that, when added to the number of protons, gives the atom it's atomic mass and has a negative charge
  3. 8. 47th element of the periodic table
  4. 9. center of the atom containing protons and neutrons
  5. 10. 55th element of the periodic table
Down
  1. 1. 18th element of the periodic table
  2. 2. the seventh family of the periodic table and has 7 valence electrons
  3. 3. 1th element of the periodic table
  4. 5. 4th element of the periodic table
  5. 7. 18th element of the periodic table