How to find the relative mass of an isotope

- How to find the relative atomic mass of isotopes
- How to find relative mass of isotopes
- How to find the relative atomic mass of an isotope
- How to find the relative atomic mass of two isotopes
- How do you find the relative atomic mass of an isotope
- How to find relative atomic mass of 3 isotopes
- How to find relative atomic mass of 2 isotopes
- How to find the abundance of an element
- How we can find mass number