| Answer | Crossword Clue |
|---|---|
| PSI | Sub-atomic particle |
| NAUTILUS | Atomic sub |
| PROTON | Atomic particle |
| MUON | Atomic particle |
| ELECTRON | Atomic particle |
| ION | Atomic particle |
| ION | Atomic particle. |
| NEUTRON | Atomic particle |
| MESON | Atomic particle |
| PION | Atomic particle |
| MESON | Elementary atomic particle |
| MUON | Short-lived atomic particle |
| PROTON | Positively-charged atomic particle |
| ALPHA | Kind of atomic particle |
| CATION | Positively charged atomic particle |
| LEPTON | Mollusk or atomic particle |
| PICKTHERIGHTION | Select the correct atomic particle? |
| NEUTRON | Particle in an atomic nucleus |
