We have that The isotope of copper with the atomic mass of the isotope copper 62.930 amu is Cu 63
From the question we are told
the atomic mass of the isotope copper-__ is 62.930 amu
Generally
Copper is the 29th element of the the periodic table with an atomic mass of 29.
Copper as an elementt has 2 stable isotopes which are
Cu 63
Cu 65
Therefore
The isotope of copper with the atomic mass of the isotope copper 62.930 amu is Cu 63
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