There are only two naturally-occuring stable isotopes of copper. The mass and natural abundance of one of them is listed in the table below. Use whatever data you need from the ALEKS Periodic Table to determine the identity, mass and natural abundance of the other isotope, and complete the table. Round your entry for mass to 4 significant digits and your entry for natural abundance to 4 significant digits. isotope mass (amu) natural abundance de 62.930 69.17% ? Dou 0 []% Explanation Chat