The Neptunium () disintegration series is unique among the four established series because: — Nuclear Chemistry and Radioactivity Chemistry Question

💡 Solution & Explanation

The Neptunium series is uniquely man-made (starts with Pu-241/Np-237) and is the only series that does not terminate at an isotope of Lead; instead, it terminates at Bismuth-209 (${}_{83}^{209}Bi$).