if half life of a radioactive substance is 60 minutes , then the % decay in 4 hours will be Share with your friends Share 1 Vaibhav T. answered this Dear Student, Half life of radioactive substance=60 min=1 hourNN0=12timehalf lifeNN0=1241NN0=124NN0=116Fraction of substance that has decayed, d=1-NN0d=1-116d=16-116d=1516% decayed=1516×100%=93.75% 11 View Full Answer Riya Sachdeva answered this 6.25% will be left and amount of decay is 93.75% -3
