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5 January, 18:25

How long does it take for only one eighth of a sample of radon-222 to remain

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  1. 5 January, 18:47
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    1/8 = (1/2) ^3 and the half life of radon is 3.8days

    Half life is the time it takes for half of any amount of a radioactive substance to decay into something else.

    Therefore for a sample of radon to decay to 1/8 of its original amount, it would take 3 x 3.8days=11.4 days
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