# A metal on combustion in excess air forms

Question:

A metal on combustion in excess air forms X, $\mathrm{X}$ upon hydrolysis with water yields $\mathrm{H}_{2} \mathrm{O}_{2}$ and $\mathrm{O}_{2}$ along with another product. The metal is :

1. $\mathrm{Rb}$

2. $\mathrm{Na}$

3. $\mathrm{Mg}$

4. Li

Correct Option: 1

Solution: