Lead (Pb) has a higher atomic number than mercury (Hg).
The atomic number represents the number of protons in the nucleus of an atom. Lead (Pb) has an atomic number of 82, indicating that it has 82 protons. On the other hand, mercury (Hg) has an atomic number of 80, indicating that it has 80 protons.
Therefore, lead (Pb) has a higher atomic number than mercury (Hg).