Question

The compound(s) that can't be formed upon combustion of sodium metal in excess air is(are) :

• A. $NaO$
• B. $Na{O}_2$
• C. $NaOH$
• D. All of the above.

Answer 1

The correct option is D All of the above.

The compound(s) formed upon the combustion of sodium metal in the excess air is sodium peroxide.

The equation for the formation of the peroxide is:
$2Na+O_2\text{(excess)}\stackrel{\Delta }{⟶}N{a}_2{O}_2$
Hence, correct option is d.