Answer :
It will take, 2.6×10²/ (50 days) for a sample of radon-218 to decay from 99 grams to 0. 50 grams.
What is Nuclear decay?
When an atom's nucleus is unstable and produces radiation on its own, this process is known as nuclear decay. In turn, one or more new elements' nuclei are formed from the original element's nucleus. These progeny nuclei are less energetically unstable and have a smaller mass than their parent nuclei.
For instance, uranium-238 emits an alpha particle as it decays into thorium-234.
Therefore, It will take, 2.6×10²/ (50 days) for a sample of radon-218 to decay from 99 grams to 0. 50 grams.
To learn more about Nuclear decay
Here: https://brainly.com/question/5675819
#SPJ4
