The number of neutrons inside the nucleus of the element Uranium-235 is

The number of neutrons in an atom's nucleus is determined by subtracting the atomic number from the mass number. Uranium is a chemical element with the atomic number 92, which represents the number of protons in its nucleus. In the case of the isotope Uranium-235, the number '235' represents the mass number, which is the total count of protons and neutrons combined. By applying the formula (Mass Number - Atomic Number), the calculation is 235 - 92, resulting in 143 neutrons. While different isotopes of uranium like U-238 exist with different neutron counts, Uranium-235 specifically contains 143 neutrons. This specific atomic structure makes it suitable for nuclear fission processes.