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What is the half life of a radioactive isotope that decreased to one-fourth its original amount in 100 year
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What is the half life of a radioactive isotope that decreased to one-fourth its original amount in 100 year

User Dalex
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The half life of this isotope would be 200 years if it only decays 1/4 of the original amount in 100 years.
User DinoSaadeh
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