The compound(s) formed upon combustion of sodium metal in the excess air is(are): NaO2, NaOH, Na2O2, Na2O

The compound(s) formed upon the combustion of sodium metal in the excess air are sodium oxide and sodium peroxide. The equation for the formation of the simple oxide is: 4Na + O2 → 2Na2O 2Na + O2 → Na2O2