Which equation is balanced?

Mg+O2→2MgO

2Na+F2→2NaF

2Al+3O2→Al2O3

2Al+F2→2AlF3

2Na + F2 → 2NaF

Explanation:

A balanced equation is an equation in which the number of the individual atoms on the left side is the same with that on the right side of the equation. This is true as explained by the law of conservation of matter.

From the options above only the equation given below is balanced :

2Na + F2 → 2NaF

There are 2 atoms of Na both on the left and on the right. There are also 2 atoms of F both on the left and right side