periodic table

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123456789101112131415
Across
  1. 1. Mass number is 4
  2. 3. Mass number is 226
  3. 7. Mass number is 16
  4. 8. Mass number is 65
  5. 10. Mass number is 14
  6. 11. Mass number is 19
  7. 13. Mass number is 85
  8. 14. Mass number is 35
  9. 15. Mass number is 269
Down
  1. 2. Mass number is 201
  2. 4. Mass number is 39.9
  3. 5. Mass number is 1
  4. 6. Mass number is 11
  5. 9. Mass number is 40
  6. 12. Mass number is 48