Sunday, August 23, 2009

Radioactive Decay

What is radioactive decay ?


Radioactive decay is a spontaneous process in which an unstable nucleus changes into a more stable nucleus by emitting radiation.

An unstable nucleus emits radiation in the form of alpha particles, beta particles or gamma rays.

Alpha decay is a spontaneous process of emitting an alpha particle from an unstable nucleus.



Beta decay is a spontaneous process of emitting a bata particle from an unstable nucleus.



Gamma decay is a spontaneous process of emitting gamma ray from an unstable nucleus.


The unstable nucleus before a radioactive decay is known as the parent nuclide. During radiactive decay, the parent nuclide is transformed into a more stable nucleus known as the daughter nuclide.

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