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Syed Afjal Ali 11T Science (BTEC) 04/05/12

Radioactive substance:

An example of a radioactive substance is plutonium. Radio
active substances are the most unstable elements due to the fact that it cannot control its protons,
neutrons and electrons. As these are unstable they emanate radiations in the form of alpha,…

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Syed Afjal Ali 11T Science (BTEC) 04/05/12

than a-particles but may be absorbed by a few millimetres of aluminium. Beta particles are
less ionising than alpha particles but more ionising than gamma rays.
Gamma rays: The gamma rays penetration power out does the penetration power of beta
or alpha due…


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