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29 Jan 2012 18:21:50 IST

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define radio activity

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define radio activity

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Arjun Virmani

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Joined: 1 Jun 2009

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29 Jan 2012 19:59:15 IST

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The phenomenon of by which an atomic nucleus of an unstable atom loses energy by emitting ionizing particles (ionizing radiation). The emission is spontaneous, in which the atom decays without any physical interaction with another particle from outside the atom.

The released particles can be +vely charged (Alpha-particles), -vely charged( Beta - particles) or nuetral rays (Gamma rays, which have no mass but are released along with them ) and accordingly, the mass of the parent atom reduces, forming a new atom.

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