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How is a nuclear reactor, designed to produce electricity, different from an atomic bomb?
A nuclear reactor uses about 90% uranium-235. An atomic bomb uses about 4% uranium-235.
In an atomic bomb, boron accelerates the fission process to produce large amounts of energy.
Only fission reactions occur in atomic bombs while both fission and fusion reactions occur in the nuclear reactor of a nuclear power plant.
Both nuclear reactors and atomic bombs contain enriched uranium.
Nuclear reactors are extremely efficient, with every neutron released from the split of a uranium atom being used to split another uranium atom. Atomic bombs are much less efficient.