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Grade: 12th pass

                        

You have 400 mg of a radioisotope with a half-life of 5 minutes. How much will be left after 30 minutes?

3 years ago

Answers : (1)

Amarjit
105 Points
							All types of radioactive decays follow first order kinetics. So as per that:400 to 200 to 100 to 50 to 25 to 12.5 to 6.26gm.Hence the mass left after 30 min or 6 half life is equal to 6.25 gm.
						
3 years ago
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