A small amount of solution containing a radioactive nucleide `A\"\"^(x)` was administrated
Channel: Doubtnut
Date: 16/02/2020

A small amount of solution containing a radioactive nucleide `A\"\"^(x)` was administrated into the blood of a patient. The activity of the nucliede id `2xx10\"\"^(3)`dps. Its half life is 15 hours. After 5 hours a sample of the blood drawn out from the patient. It,s activity was 16 dpm per mL. At `A\"\"^(x)`emits `alpha` ray. how many helium atoms present in hours?