state the speed of alpha and beta radiations
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Alpha, Beta, Gamma in ascending order. Alpha particles leaves the nucleus of an unstable atom at a speed of 16,000 kilometres per second, around a tenth the speed of light. Beta particles travel at a speed of 270,000 kilometres per second, around 98% of speed of light. Gamma particles travel at the speed of light.
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- The speed of beta radiation is higher than that of alpha radiation.
- Alpha rays or alpha radiation is made up of alpha particles which in turn consist of two protons and two neutrons, just like Helium atoms. They have a speed of 10⁷ m/s.
- Beta radiation consists of beta particles that have a single positive or negative charge. The speed of these particles is 2 x 10⁸ m/s.
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