The Chemical formula for sodium dioxide is Na2O, where each sodium atom (Na) is bonded with one oxygen atom (o), Sodium dioxide is an ionic compound composed of sodium cations and oxide anions.
However, it's important to note that there are other compounds that contain sodium and oxygen, such as sodium peroxide, which I mentioned earlier. Sodium peroxide is different from sodium dioxide . Sodium peroxide contains two oxygen atoms per sodium aton, while sodium dioxide contains only one oxygen atom per sodium atom.