Across
- 1. A negatively charged ion.
- 4. Value identifying an electron's main energy level.
- 7. Any atom with a net charge.
- 13. Abbreviated electron configuration using brackets.
- 16. Rule: electrons occupy empty orbitals before pairing up.
- 18. A positively charged ion.
- 19. Theory that light acts as both a wave and a particle.
- 21. Measure of an electron’s angular momentum.
- 22. Unique series of colored lines for an element.
- 23. Rule: electrons in one orbital must have opposite spins.
- 24. The arrangement of electrons in an atom.
Down
- 2. Region of highest electron probability.
- 3. The impossibility of knowing both position and momentum.
- 5. An atomic orbit or energy shell.
- 6. An electron's lowest energy level.
- 8. The "planetary" atomic representation.
- 9. Outermost electron involved in bonding.
- 10. Condition of an electron after absorbing energy.
- 11. Shorthand showing valence electrons as dots.
- 12. Current model using electron orbitals.
- 14. Rule: fill lowest energy sublevels first.
- 15. Diagram using lines and arrows for electrons.
- 17. Divisions of energy levels, like s, p, d, or f.
- 20. A massless particle of light energy.