Answer :
magnesium + oxygen → magnesium oxide
Mg + O2 → MgO
reactants: 1 × Mg, 2 × O products: 1 × Mg, 1 × O Not balanced.
Mg + O 2 → 2MgO
magnesium + oxygen → magnesium oxide
Mg + O2 → MgO
reactants: 1 × Mg, 2 × O products: 1 × Mg, 1 × O Not balanced.
Mg + O 2 → 2MgO