Across
- 2. what is the atomic number for berryllium
- 4. Zn
- 5. Br
- 9. what is the atomic number of nitrogen
- 10. what is the atomic number for hydrogen
- 11. atomic number for fluorine
- 12. calcium
- 14. what is the atomic number of magnesium
- 15. dy
- 16. sn
- 17. K
- 20. what is the atomic number for boron
Down
- 1. name the element that has a atomic number of 53
- 3. p
- 5. B
- 6. what parts of the atoms are mobile
- 7. what is the atomic number of lithium
- 8. name the element that has a atomic number of 34
- 13. what was the name of jj thompsons model
- 14. atomic number of helium
- 18. Al
- 19. S