A radioisotope `._(Z)A^(m) (t_(1//2) = 10` days) decays to give `._(z - 6)B^(m - 12)` stable atom
Channel: Doubtnut
Date: 2020-07-12

A radioisotope `._(Z)A^(m) (t_(1//2) = 10` days) decays to give `._(z - 6)B^(m - 12)` stable atom along with `alpha`-particles. If `m g` of A are taken and kept in a sealed tube, how much He will accumulate in 20 days at `STP`.