Question

What is the molar mass of the isotope lead-208 (`208Pb`)?

Answer 1

`208*g*mol^-1`

Explanation:

The isotopic notation `""^(208)Pb` specifies the number of neutrons and protons, i.e. massive nuclear particles. Of course, we know `Z`, the number of nuclear protons, or we would know if we looked up the atomic number of `Pb`. This is your job.