Question

What prevents a large piece of uranium ore from going naturally into a chain reaction?

A.)None of its nuclei fission without bombardment from human-controlled sources. B.)There isn't enough uranium for fissioning neutrons to trigger another reaction. C.)Even a small chunk is too large to sustain a chain reaction. D.)So many of its fissioning neutrons are captured by uranium-238 which then decays in other ways. E.)The sample is not large enough to capture many neutrons.

Answer 1