Extremely Radioactive Isotope of Uranium 238
Used mainly for Fission
Name, symbol Uranium-235,235U
Neutrons 143
Protons 92
Nuclide data
Natural abundance 0.75%
Half-life 703,800,000 years
Parent isotopes: 235Pa, 235Np,
239Pu
Decay products: 231Th
Isotope mass 235.0439299 u
Spin 7/2−
Excess energy; 40914.062 ± 1.970 keV
Binding energy: 1783870.285 ± 1.996 keV
Decay modes
Decay mode :Decay energy (MeV)
Alpha: 4.679