Radioactive element has a half life of 25 minutes. Calculate the fraction of element that has decayed in 60 minutes.

A radioactive substance has a half life of 60 minutes. After 3 hours, the fraction of atom that have decayed would be.

A radio - active element has half - life of 15 years. What is the fractional that will decay in 30 years ?

A radioactive substance has a half-life of 60 minutes. During 3 hours the fraction of atom that have decayed would be

A radioactive substance has half life of 60 minutes. During 2 hours, the fraction of the sample that have decayed would be

A certain radioactive element has half-life of 4 days. The fraction of material that decays in 2 days is

A certain radioactive element has half-life of 4 days. The fraction of material that decays in 2 days is