Uranium225
Uranium-225 is a hypothetical isotope of uranium. Currently, there is no known or synthesized isotope of uranium with a mass number of 225. Natural uranium is primarily composed of Uranium-238 and Uranium-235, with trace amounts of Uranium-234. The known isotopes of uranium range from Uranium-217 to Uranium-242. The creation of an isotope requires a specific number of protons and neutrons within the atomic nucleus. The number of protons in uranium is always 92, defining it as the element uranium. The mass number is the sum of protons and neutrons. Therefore, for Uranium-225, this would imply 92 protons and 133 neutrons (225 - 92 = 133). While theoretically possible to have such a combination, it has not been observed or produced in any laboratory experiments to date. Scientific literature and nuclear databases do not list Uranium-225 as a recognized isotope. Research into the existence and properties of neutron-deficient or neutron-rich isotopes of various elements, including uranium, is an ongoing area of nuclear physics, but Uranium-225 is not a currently identified nuclide.