What type of nuclear reaction is responsible for the liberation of energy:
(a) In a nuclear reactor?
(b) In the sun?
a) Nuclear fission-Nuclear ﬁssion is a process where the nucleus of an atom is split into two or more smaller nuclei, known as ﬁssion products.
b) Nuclear fusion-nuclear fusion is a reaction in which two or more atomic nuclei come close enough to form one or more different atomic nuclei and subatomic particles.