Across
- 3. Negatively charged particle orbiting the nucleus of an atom
- 6. Type of radiation that consists of 2 protons and 2 neutrons
Down
- 1. A particle representing a quantum of light or other electromagnetic radiation
- 2. Type of radiation consisting of high-speed electrons
- 4. Central part of an atom, contains protons and neutrons
- 5. Type of radiation with no mass and high penetration power