Uranium has three common isotopes. The average atomic mass of uranium is 23.7 u/atom.
Isotopes are similar elements that have a different number of protons.
Uranium has three isotopes
The abundance of 2U has an atomic mass of 233.878 is 0.01%
The abundance of U has a mass of 234.892 amu is 0.71%
The **U has an atomic mass of 237.911 amu is 99.28%
Let's assume we have 10 000 atoms of Uranium
Mass of the 0.01 atoms = 0.01 x 233.878 = 2.33878
Mass of the 0.71 atoms = 0.71 x 234.892 = 166.773
Mass of the 99.28 atoms = 99.28 x 237.911 = 23,619.80
2.33878 + 166.773 + 23,619.80 = 23,788.8
23,788.8 / 1000 = 23.7 u/atom
Thus, the average atomic mass of uranium is 23.7 u/atom.
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