Lead (II) Nitrate. Ionic bond since lead is a metal and nitrate is a polyatomic ion. NO3 has a charge of -1. Since there are 2, the overall charge is -2. Ionic must always have a net charge of 0, so Pb must have a charge of +2.
Naming- keep the first name the same, change the second to end with —ide (chlorine —> chloride) unless a polyatomic ion which stays the same.