8. Natural and Artificial Radioactivity

 

 

Natural radioactivity:

Emission of radiation due to disintegration of a nucleus through induced processintegration of a nucleus through induced processself integration of a nucleusself disintegration of a nucleus.

Alpha, beta and gammaneutron and positronall the abovenono of the above radiations are emitted.

It is a spontaneousinducedboth spontaneous and inducedeither spontaneous or induced process.

Exhibited by elements with atomic number less than 82more than 28less than 28more than 82.

This cannot be controlledcan be controlled.

Artificial radioactivity:

Emission of radiation due to self disintegration of a nucleusdisintegration of a nucleus through induced processintegration of a nucleus through induced processself integration of a nucleus.

Mostly elementary particles Alpha, beta and gammaneutron and positronall the abovenono of the above are emitted.

It is an spontaneousinducedboth spontaneous and inducedeither spontaneous or induced process.

Exhibited by elements with atomic number more than 82more than 28less than 82less than 28.

This can be controlledcannot be controlled.