Respuesta :

Balanced Equation of Magnesium reacting with Oxygen would be:

2Mg + O₂ → 2MgO

So, Option C is the balanced equation!

Hope this helps!
Photon
2Mg + O₂ → 2MgO

Therefore : the answer would be : C. 2Mg + O2 --> 2MgO.

Hope this helps !

Photon