(a(i))[1]
Radioactive decay is both random and spontaneous. State what is meant by random in this context.
(a(ii))[1]
State what is meant by spontaneous.
(a(iii))[1]
State one piece of evidence that supports the random nature of decay.
(b(i))[3]
Describe the differences between nuclear fission and nuclear fusion processes.
(b(ii))[2]
Explain, with reference to how binding energy per nucleon varies with nucleon number, why nuclear fission and nuclear fusion both lead to a release of energy.