Physics, asked by raiutkarsh7339, 8 months ago

Half life of a radioactive substance is 30 days. Number of atoms

Answers

Answered by unzainab
1

Answer:

Since half life is 30 days. After 90 days, disintegrated mass percentage

=(1−(21)90/30)×100=87×100=87.5%

Explanation:

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