Answer:
A. 206 82Pb.
B. 214 82Pb.
C. 210 82Pb.
Explanation:
From the diagram given in question above, we can see that the parent nucleus is undergoing alpha decay.
This implies that the daughter nuclei obtained will have a decrease of 4 in the mass number and a decrease of 2 in the atomic number.
Please see attached photo on how to solve the question.
