There isn't a formula because its a pure element. Pb is Lead.
The chemical formula for lead is Pb and for nitrogen is N.
The chemical formula for lead(II) fluoride is PbF2.
Formula: Pb(NO3)2
The chemical formula for plumbic nitrate is Pb(NO3)4.
Formula: Pb
Lead acetate's chemical formula is Pb(CH3COO)2
If this compound exist, the chemical formula should be Pb(BrO4)2.
Symbol: Pb
Pb(NO3)2
The chemical formula for lead hydroxide is Pb(OH)2.
The formula for lead (IV) chlorite is Pb(ClO2)4.
Formula: Pb(NO3)2