Across
- 2. pattern of electron
- 4. the top
- 8. distance
- 11. neg subatomic particle
- 12. arrangement of elements
- 16. reoccuring
- 17. a scale
- 18. passed over
- 19. continuous
Down
- 1. occurence
- 3. able to see
- 5. quantity of energy
- 6. visible color
- 7. a symbol
- 9. a particle
- 10. atom w/ electric charge
- 13. how fast
- 14. partial level
- 15. table of elements