| Clue | Source | Date |
|---|---|---|
| Molecular regions that may contain zero, one or two electrons | Wall Street Journal | 09 Jun 2026 |
| Regions of atoms where electrons are in motion around the nucleus | ||
| Ring roads (8) | ||
| Places for electrons | Wall Street Journal | 19 Dec 2020 |
| Wave functions of electrons in atoms | ||
| Some electrons | ||
| Electrons, in wave functions | ||
| Certain electrons |