Homework Solution

TQ 13-11

Writing the decay reaction equations:

₉₂²³⁵U ---> ₂⁴He + ₉₀²³¹Th

₉₀²³¹Th ---> _-1⁰e + ₉₁²³¹Pa + (antineutrino)

₉₁²³¹Pa ---> ₂⁴He + ₈₉²²⁷Ac