Across
- 3. Diagram that represents valence electrons
- 7. The shell or orbital in which the electron is located relative to the atom's nucleus
- 9. Energy that comes from a source and travels at the speed of light.
- 10. A positively charged ion
- 13. The rate at which a wave vibrates
- 15. Radiation including visible light, radio waves, gamma rays, and X-rays
- 19. The lowest energy state of an atom or other particle
- 20. A discrete quantity of energy
- 22. The arrangement of electrons in orbitals around the nucleus
Down
- 1. Particles consisting of two protons and two neutrons tightly bound together
- 2. A spectrum of the electromagnetic radiation emitted by a source
- 4. Emitting Radiation Spontaneously
- 5. The tendency of atoms to prefer to have eight electrons in the valence shell
- 6. A fast-moving electron emitted by radioactive decay of substances
- 8. A particle representing a quantum of light or other electromagnetic radiation
- 11. Represents the reactants and products in radioactive decay, nuclear fission, or nuclear fusion
- 12. Electromagnetic radiation with the highest frequency
- 14. The distance from one crest or trough to another
- 16. An atom or molecule with a net electric charge
- 17. An energy level defined by quantum theory
- 18. The electrons in the outermost shell
- 21. A negatively charged ion