Natural uranium is made up of
Natural uranium is composed of two different isotopes: 99.3% is uranium-238, the nucleus of which contains 238 nucleons, comprising 92 protons and 146 neutrons, while the other 0.7% is made up of uranium-235, which contains 235 nucleons, comprising 92 protons and 143 neutrons.
Natural uranium is made up of 99.282% U???, 0.712% U???, 0.006?.% U??