How do you calculate the mass of each isotope

- How do you calculate the mass of an isotope
- How do you calculate the atomic mass of isotopes
- How to calculate the average atomic mass of each isotope
- How do you calculate the mass number of an isotope
- How do you calculate the average atomic mass of isotopes
- How do you calculate the relative atomic mass of isotopes
- How do you calculate the average mass of an isotope
- How we can find mass number