Q: The minimum amount necessary for self-sustained fission of a given nuclide is called what?


Read this paragraph and choose the correct option from the provided answers:

Not every neutron produced by fission induces fission. Some neutrons escape the fissionable material, while others interact with a nucleus without making it fission. We can enhance the number of fissions produced by neutrons by having a large amount of fissionable material. The minimum amount necessary for self-sustained fission of a given nuclide is called its critical mass.

 Choices:

- its half-life

- its molar mass

- its activation energy

- its critical mass


A:
its critical mass