Uranium-237 has 142 neutrons. This can be determined by subtracting the atomic number (92) from the Atomic Mass (237) of uranium-237.
Uranium-238 has 146 neutrons in its nucleus.
A nucleus of uranium-238 contains 146 neutrons.
In a uranium-238 atom, the number in the isotope name stands for the total number of protons and neutrons in the nucleus. So in this case, uranium-238 has 92 protons (atomic number) and 146 neutrons (238 - 92).
There is no uranium isotope with 234 neutrons. The questioner almost certainly meant the uranium isotope with 234 nucleons, which is a naturally occurring isotope U234 otherwise element 92, with 142 neutrons.In which case its half life would be 252,000 years.
Uranium isotopes
Uranium-237 has 92 protons (as all uranium isotopes do) and typically 145 neutrons. This would make the total number of electrons in uranium-237 equal to the number of protons, which is 92 electrons.
Uranium-230 is a radioactive isotope of uranium with 142 neutrons.
Uranium has 92 electrons and protons.Uranium-234 has 142 neutrons, uranium-235 has 143 neutrons and uranium-238 has 146 neutrons.
Uranium-238 has 146 neutrons.
Uranium 238 has 146 neutrons.
Uranium-238 has 146 neutrons in its nucleus.
The atomic number of uranium is 92. Uranium-235 has 143 neutrons.
A nucleus of uranium-238 contains 146 neutrons.
146 neutrons.
93Np237 isotope has 144 neutrons (237 - 93 = 144)
143 neutrons
For the natural isotopes of uranium: Uranium 238 has: 92 protons, 92 electrons and 146 neutrons. Uranium 235 has: 92 protons, 92 electrons and 143 neutrons. Uranium 234 has: 92 protons, 92 electrons and 142 neutrons.