Final answer:
The formula of zinc nitrate is Zn(NO3)2, which consists of one zinc ion with a +2 charge and two nitrate ions. Zinc nitrate is commonly produced in single replacement reactions involving zinc and another metal nitrate.
Step-by-step explanation:
The formula of zinc nitrate, a compound formed when zinc reacts with nitric acid, is Zn(NO3)2. This compound consists of one zinc ion with a +2 charge and two nitrate ions, each with a -1 charge. When zinc is placed in a solution with another metal nitrate, such as copper nitrate, a single replacement reaction occurs, and one of the products is aqueous zinc nitrate as indicated in the reaction:
Zn(s) + Cu(NO3)2(aq) → Cu(s) + Zn(NO3)2(aq)
Furthermore, if you are performing a single replacement reaction with zinc solid and a lead(II) nitrate solution, the resultant compound is also zinc nitrate in solution, fitting the general form Zn(NO3)2. This showcases zinc's ability to form a +2 charge when it ionizes, confirming its valency in such ionic compounds.