| intervening atom(expression, feature, type, atom) |
| ionized atom(expression, feature, type, atom) |
| isoelectronic atom(expression, feature, type, atom) |
| kaonic atom(expression, feature, type, atom) |
| leptonic atom(expression, feature, type, atom) |
| localized atom(expression, feature, type, atom) |
| muonic atom(expression, feature, type, atom) |
| muonium atom(expression, feature, type, atom) |
| natural nuclear fission reactor(expression, feature, physics, radioactivity) |
| neutron-proton ratio(expression, feature, physics, radioactivity) |
| neutron capture(expression, feature, physics, radioactivity) |
| neutron cross section(expression, feature, physics, radioactivity) |
| neutron emission(expression, feature, physics, radioactivity) |
| neutron number(expression, feature, physics, radioactivity) |
| neutron research facility(expression, feature, physics, radioactivity) |
| neutron transport(expression, feature, physics, radioactivity) |
| nuclear atom(expression, feature, type, atom) |
| nuclear binding energy(expression, feature, physics, radioactivity) |
| nuclear clock(expression, feature, physics, radioactivity) |
| nuclear data(expression, feature, physics, radioactivity) |