Question

Which one of the following statements about uranium is correct
(a) ²³⁵U is fissionable by thermal neutrons
(b) Fast neutrons trigger the fission process in ²³⁵U
(c) ²³⁸U breaks up into fragments when bombarded by slow neutrons
(d) ²³⁵U is an unstable isotope and undergoes spontaneous fission

Answer 1

Hello mate●︿●

D-U is an unstable isotope and undergoes spontaneous fission.

Hope it help you!!!