Element Crossword

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Across
  1. 6. This element's atomic mass is 9.
  2. 7. This element has 70 electrons.
  3. 10. This is a halogen element and is important for the nervous system.
  4. 11. This is a chemical element and is silvery white.
  5. 12. This element has 13 protons.
  6. 13. This element is a stable isotope of hydrogen and is a nonmetal.
  7. 14. This element's atomic number is 75.
Down
  1. 1. This is a soft silvery metal and is in group 3.
  2. 2. This element proton number is 8.
  3. 3. This element's group is 3 and is in period 5.
  4. 4. This element's group is 18 and period 1.
  5. 5. This element has 16 neutrons.
  6. 8. This element has 30 neutrons.
  7. 9. This element has 87 electrons.