Periodic Table

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Across
  1. 3. ____mass
  2. 6. same as electrons
  3. 7. Mg
  4. 10. another organisation word for the periodic table
  5. 11. atomic mass - atomic number
  6. 12. atomic number of boron
Down
  1. 1. Its's atomic mass is 1
  2. 2. First Word of the title
  3. 4. Second word of the title
  4. 5. a organisation word for the periodic table
  5. 8. atomic....
  6. 9. atomic #