Periodic table

123456789101112131415
Across
  1. 3. has an atomic number of 18
  2. 5. the atomic number is 8
  3. 8. group 1 period 3
  4. 10. period 3 group 14
  5. 11. The atomic mass is 4
  6. 12. has an atomic number of 80
  7. 13. group 14 period 5
  8. 15. Group 18 period 4
Down
  1. 1. group 14 period 2
  2. 2. in period 2 group 13
  3. 4. group 15 period 3
  4. 6. it is a transition metal
  5. 7. has an atomic mass of 197
  6. 9. has an atomic mass of 64
  7. 14. has an atomic mass of 20