A radioactive isotope ( day) decays to give stable atom along with -particles

CHEMISTRY · Subjective · US High School · Chemistry · Atomic Structure & Nuclear · Atomic Structure & Nuclear

Problem

A radioactive isotope

{}^{m}_{Z}A

(

t_{1/2}=10

day) decays to give

{}^{m-12}_{Z-6}B

stable atom along with

\alpha

-particles. If mg of

A

are taken and kept in a sealed tube, how much He will accumulate in 20 day at STP?