What is the chemical formula for lead(II) nitrate?

The correct answer is c) Pb(NO₃)₂.

Lead(II) nitrate is a chemical compound composed of lead (Pb) and nitrate (NO₃) ions. Since lead has a +2 oxidation state in this compound, it pairs with two nitrate ions, which each have a -1 charge. Therefore, to balance the charges, the formula is written as Pb(NO₃)₂, indicating that one lead ion combines with two nitrate ions.