Across
- 3. Helium nucleus emitted by unstable isotopes
- 5. The process in which an object is exposed to radiation
- 6. counter, technology to measure radiation (6)
- 7. This colorless, odorless gas, originating from the decay of uranium and thorium in the Earth's crust, contributes to background radiation.
- 9. Alternative form of an element with different mass number
Down
- 1. Bit of electromagnetic radiation
- 2. The unwanted presence of radioactive materials on other objects
- 4. unit of measurement of ionising radiation
- 8. Particles such as Na+ and Cl-