# Does Uranium-235 always split into Krypton and Barium in nuclear fission?

In most nuclear fission examples and exercises, the products of a nuclear fission of Uranium-235 are two light nuclei of Krypton and Barium:

$$\mathrm{ _0^1n + U \longmapsto Kr + Ba + energy }$$

Is there some fission reaction that produces more stable nuclei instead of Krypton and Barium?

Please mention all possible fission equations of Uranium-235. There's another question, is Uranium-235 the only fissile nucleus?

• In the case of large nuclei things are rarely always the same way. The usual question is "What is the branching ratio to [some particular state]?" – dmckee --- ex-moderator kitten Jul 13 '14 at 2:58
• For a detailed description you may read this Wikipedia article – hsinghal Aug 22 '16 at 16:13

For the second question, no, $\mathrm U^{235}$ is not the only fissile nucleus. $\mathrm{Pu}^{239}$ is used in reactors as well. Many other heavy nuclei will undergo spontaneous fission.