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Atoms and Atomic Structure

How many neutrons are in uranium?

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April 25, 2010 7:49AM

Uranium has many isotopes and each isotope has a different number of neutrons (N).

N = atomic weight of the isotope - atomic number of uranium (A=92)

The number of neutrons of the isotope 92U238 is 238-92=146 and the number of neutrons of the isotope 92U235 is 235-92=143.