One decay series for radon is , , , , , , , (a) What is the final isotope produced by this decay series?

One decay series for radon is α, α, β, α, β, α, β, β

(a) What is the final isotope produced by this decay series?

(b) Another possible decay series for radon is α,  β, β α, α,  β, β, α. Does this lead to the same isotope as in part (a)?