engineering recuitment AAI ATC Junior Executive 2025 Mock Test Series Physics Nuclear Physics Radioactivity
The radio isotopes \(^{212}_{83}Bi\) decays with α- and β-emissions simultaneously to give the radioactive products X and Y. X and Y further decay to give an identical product Z.
The common product Z is an isotope of
1
81Tl
2
82 Pb
3
83Bi
4
84Po