What is the Q value for lead in the Rutherford Experiment?

[the whizz]

in a problem using the Rutherford scattering experiment, i Need to find what the turning distance would be using lead instead of gold. I have that gold has a Q= 79e, what would the Q = ?? for lead?

 

[tyco05]

Gold has an atomic number of 79 - hence 79 protons in the nucleus. The charge is then 79e.

What do you think this would be for Lead? You might need a periodic table to help you with this one.