Question

Balance these chemical equations mg(s)_ + _N2(g) = _mg3N2

Answer 1

`3 Mg(s) + N_2(g) = Mg_3N_2(s)`

Step-by-step explanation:

The valance of magnesium atom is
`+2`

While the valence of nitrogen atom is
`- 3`

Let us first write the first half-reactions

`Mg ---> Mg^(2+) + 2e^(-)`

The second half reaction is

`2N + 6e^- -----> N_2`

Adding the above two reactions and writing the final reaction, we get -

`Mg + N2 = Mg_3N_2`

The balance equation is

`3 Mg(s) + N_2(g) = Mg_3N_2(s)`