The imaginary element Unobtanium (Un) has three isotopes wit…
The imaginary element Unobtanium (Un) has three isotopes with the following abundance and masses: 133Un has an abundance of 11.37% 135Un has an abundance of 45.575% 137Un has an abundance of 43.055% Calculate the atomic mass of Unobtanium. Represent your answer rounded to 2 decimal places. Record your answer with no spaces or units ex. 123.45
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