The element X has three naturally occurring isotopes. The is…

The element X has three naturally occurring isotopes. The isotopic masses (amu) and % abundances of the isotopes are given in the table below. The average atomic mass of the element is ________ amu.             Isotope Abundance (%) Mass 164X 30.60 159.37 164X 15.79 162.79 164X 53.61 163.92