The formula for sodium oxide is Na₂O.
Sodium oxide is an ionic compound formed from sodium (Na) and oxygen (O). The subscripts in the formula indicate the ratio of each element needed to achieve a neutral charge. Sodium (Na) has a +1 charge (Na⁺), and oxygen (O) has a -2 charge (O²⁻). To balance the charges, two sodium ions (2 x +1 = +2) are required for each oxygen ion (-2). Hence, the formula is Na₂O. It is an alkali metal oxide.
