The Curiosity rover sent to explore the surface of Mars has an electric generator powered by heat from the radioactive decay of 238Pu, a plutonium isotope that decays by alpha emission with a half-life of 88 years. At the start of the mission, the generator contained 9.6 × 1024 nuclei of 238Pu.
What is the daughter nucleus of the decay?
A. 238Am B. 238Pu C. 238Np
D. 236Th E. 234U