Question

The more readily fissionable isotope of uranium has an atomic mass of(a) 234(b) 235(c) 236(d) 238

Answer 1

d) uranium 238 is the fissionable isotope of uranium

Answer 2

Answer:

D) 238

Explanation:

Uranium-238 is a common isotope of uranium found in nature. It is not fissile, but a fertile material. Uranium-238 is fissionable by fast neutrons and can't support any chain reaction as the inelastic scattering reduces the neutron energy to a lower range where fast fission of a nuclei is probable.

Uranium has an atomic number 92, and the mass number of the isotope is given as 238. Therefore, this states that it has 92 protons, 92 electrons, and 238 - 92 : 146 neutrons (ratio).