In the final step of the thorium-232 disintegration series,the parent nuclide decays to lead-208 and an alpha particle.What is the parent nuclide?

Question

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The final step of the thorium-232 disintegration series involves the decay of the parent nuclide to lead-208 and an alpha particle. The only option that shows lead-208 as the product of the decay process is choice D, which corresponds to polonium-212. Therefore, the parent nuclide is polonium-212, which undergoes a series of alpha and beta decays to eventually produce lead-208.

In the Final Step of the Thorium-232 Disintegration Series,the Parent