A hypothetical element, Z, has two stable isotopes. Z-38 = 38.012 u 75.68% Z-46 = 45.981 u…

A hypothetical element, Z, has two stable isotopes. Z-38 = 38.012 u 75.68% Z-46 = 45.981 u 24.32% The element's atomic mass would be closest to which of the elements?K, Ar, Ca