Across
- 2. is the distance in the line of a wave
- 7. a negatively charged ion
- 8. most energy of any wave
- 9. is the number of occurrences
- 11. is the act of emitting radiation
Down
- 1. the lowest energy state of an atom
- 3. a high-speed electron
- 4. a charged atom or molecule
- 5. a particle of light
- 6. energy in the form of waves or particles
- 10. a positively charged ion