why uranium, atomic mass 238,atomic no-92 don't undergo fission
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There is 3 isotopes of uranium
U 234, u 235 u238
Nuclear fission done by u 235 by add one extra neutron
U235+1n => Ba142+kr91 +3 n1
And then 3 new neutrons react with u235 and this creat a chain reaction
U235 can decay after absorbing a very low energy
but U238 needs a large energy to decay, so that a chain reaction used U235,
U 234, u 235 u238
Nuclear fission done by u 235 by add one extra neutron
U235+1n => Ba142+kr91 +3 n1
And then 3 new neutrons react with u235 and this creat a chain reaction
U235 can decay after absorbing a very low energy
but U238 needs a large energy to decay, so that a chain reaction used U235,
aki01:
why u238 need large energy
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