Across
- 2. An electron emitted from the nucleus
- 3. The natural and spontaneous process that emits or radiates energy
- 5. Different forms of the same element that have the same number of protons, but different number of neutrons
- 6. The unit of measurement for activity
- 8. Has a +2 charge
- 9. negatively charged particle that orbits around the nucleus
- 10. positively charged particle located in the nucleus of the atom
Down
- 1. The time required for one half of the radioactive atoms in the radionuclide to disintegrate
- 4. The SI unit for activity
- 5. The complete removal of an orbital electron from an atom following the transfer of energy from a passing charged particle
- 7. Pure energy, has no mass and no charge
- 8. The smallest unit of an element that retains the identity of that element