[问答题]
Decay series, such as that shown in(Fig. Below), can be classified intoks c4xzr9xzmp 5(7gl9 four )i*e-5pd6yxj09la t m;xdtzxfamilit9*dx m5xylpitja;-)e6x dz 0 es, depending on whether the mass numbers have the form $4n$, $4n+1$, $4n+2$, or $4n+3$, where $n$ is an integer. Justify this statement and show that for a nuclide in any family, all its daughters will be in the same family.
