| 100% | ATOM | 4 | Particle for Bohr |
| 87% | ATOM | 4 | Particle for Niels Bohr |
| 60% | ATOM | 4 | Particle for Fermi |
| 56% | ORT | 3 | Food particle for Spot |
| 52% | ATOM | 4 | Particle of interest to Bohr |
| 50% | ATOM | 4 | Subject for Niels Bohr |
| 50% | LINAC | 5 | Device for accelerating particles |
| 49% | ATOM | 4 | Particle that's split for nuclear power |
| 49% | CERN | 4 | Particle-physics lab in Switzerland, for short |
| 49% | LAB | 3 | Place for a particle accelerator |
| 48% | ION | 3 | ___ channel (passage for charged particles) |
| 48% | KAON | 4 | Particle named for a letter of the alphabet |
| 48% | ATOM | 4 | Focus of study for Niels Bohr |
| 48% | ATOM | 4 | Subject of study for Niels Bohr |
| 46% | DANES | 5 | Tycho Brahe and Niels Bohr, for two |
| 46% | DANES | 5 | Niels Bohr and Tycho Brahe, for two |
| 46% | DANES | 5 | Victor Borge and Niels Bohr, for two |
| 46% | ATOMS | 5 | Particles whose name comes from the Greek for "uncuttable" |
| 46% | WBOSON | 6 | Subatomic particle named for the weak force |
| 46% | BOSON | 5 | Subatomic particle named for an Indian physicist |
| 46% | TAU | 3 | Elementary particle named for a Greek letter |
| 46% | PION | 4 | Subatomic particle named for a Greek letter |
| 43% | ATOM | 4 | Research subject for which Bohr won a Physics Nobel |
| 43% | NIELS | 5 | Nobelist Bohr with a 32-Across named for him |
| 42% | ATOM | 4 | Tiny particle whose name comes from the Greek for "indivisible" |
| 41% | NIELS | 5 | Physicist ___ Bohr who is known for his contribution to quantum theory |
| 41% | ATOM | 4 | Tiny particle that's derived from the Greek word for "indivisible" |
| 40% | NIELS | 5 | ___ Bohr, Danish physicist known for his contributions to atomic structure and quantum theory |
| 38% | SOLS | 4 | Technical name for colloids made of microscopic particles, like paint, mud or blood |
| 36% | NANO | 4 | Prefix for "particle" and "second" |