Which of the following is the symbol for Ozone? oz CO2 03 CO3

The correct answer is "os".<br /><br />Ozone is a molecule composed of three oxygen atoms, and its chemical formula is O3. The symbol "os" is a common abbreviation for ozone. The other options provided are not correct. "oz" is not a recognized chemical symbol, and "$CO2$" and "$CO3$" represent carbon dioxide and carbonate, respectively, which are different compounds.