Chemistry > Radioactivity, Nuclear Equations, Mass Energy Equivalence
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Radioactivity, Nuclear Equations, Mass Energy Equivalence

  • Radioactivity discovered by Becquerel, M and P. Curie; developed also by Rutherford and Soddy

  • Nuclear equations must balance in mass and nuclear charges

  • Nuclear reactions involve transmutation of elements – changing one element into another

  • Radioactivity can be used to make new elements, like Pu

  • Loss of mass in nuclear changes leads to production of lots of energy

  • Einstein’s equation: E = mc2

  • Binding energy per nucleon shows stability of nuclei

  • Curve of binding energy; maximum at Fe

  • Both fusion of light elements and fission of heavy elements lead to energy output