The half-life of a radioactive isotope is three hours.

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asked Mar 30, 2018 in Chemistry by paayal (26,720 points) 4 6 53

The half-life of a radioactive isotope is three hours. If the initial mass of the iosotope were 256g, the mass of it remaining undecayed after 18 hours would be
(a) 4.0g
(b) 8.0g
(c) 12.0g
(d) 16.0g.

1 Answer

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answered Mar 30, 2018 by sanjaydas (61,430 points) 5 7 7
selected Apr 1, 2018 by Vikash Kumar
 
Best answer

The correct answer is:

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