Question #ba96b

Feb 18, 2017

Mg =+2 O = -2 N =+3

Explanation:

Magnesium is almost always +2. with an electron configuration of
$1 {s}^{2} 2 {s}^{2} 2 {p}^{3} {s}^{2}$ Magnesium tends to lose the two 3s electrons. This leaves magnesium with the stable electron configuration of Neon and a positive 2 charge.

Oxygen is almost always -2 with an electron configuration of
$1 {s}^{2} 2 {s}^{2} 2 {p}^{4}$. Oxygen with a high electro negativity tends to gain to electrons. This leaves Oxygen with the stable electron configuration of Neon and a negatitive 2 charge.

The polyatomic ion of $N {O}_{2}$ nitrite has a net charge of -1. The charge of the nitrogen can be calculated using the equation.

$1 \times N + 2 \times O = - 1$ The charge on Oxygen -2 can be put in for O

$1 \times N + 2 \times - 2 = - 1$ This gives

$N + - 4 = - 1$ adding +4 from both sides gives

$N + - 4 + 4 = - 1 + 4$ This gives

N = +3