Across
- 1. high-energy, high-speed electrons or positrons
- 4. One of the worst nuclear disastors, in modern day Ukraine
- 6. The proccess of the Nucleus of an unstable atom losing energy
- 7. An element with a different number of neutrons
Down
- 2. Like beta particles, but earlier in the greek alphabet
- 3. at the centre of every atom
- 5. Bad stuff, avoid it.