| S. No. | Natural radioactivity | Artificial radioactivity |
| 1 | Emission of radiation due to self- disintegration of a nucleus. | Emission of radiation due to disintegration of a nucleus through induced process. |
| 2 | Alpha, beta and gamma radiations are emitted. | Mostly elementary particles such as neutron, positron, etc. are emitted. |
| 3 | It is a spontaneous process. | It is a induced process |
| 4 | Exhibited by elements which atomic number more than 83. | Exhibited by elements with atomic number less then 83. |
| 5 | This cannot be controlled. | This can be controlled. |
