Question

Copper is composed of two naturally occurring isotopes: Cu−63 (69.170%) and Cu−65. The ratio of the masses of the two isotopes is 1.0318. What is the mass of Cu−63?

Answer 1

In an isotope, it is given by this notation
Element symbol-atomic mass.

Answer 2

Can you explain more please. I don't really understand what you said. Thanks

Answer 3

In Cu-65
element symbol is Cu and 65 is the atomic mass.

Answer 4

So, is the mass of Cu-63 equal to 63?

Answer 5

Correct.