Question

What is the name of the polyatomic ion in the compound Na2O2?
(1) hydroxide (3) oxide
(2) oxalate (4) peroxide

Answer 1

The correct answer is option 4. Peroxide is the polyatomic ion in the compound Na2O2. The name of the compoune is sodium perozide. It is a yellowish solid produced when sodium is allowed to react with oxygen.