Em tham khảo nha:
\(\begin{array}{l}
N{O_3}^ - \\
{p_N} = {e_N} = 7\\
{p_O} = {e_O} = 8\\
{p_{N{O_3}^ - }} = 7 + 8 \times 3 = 31\\
{e_{N{O_3}^ - }} = 7 + 8 \times 3 + 1 = 32\\
S{O_4}^{2 - }\\
{p_S} = {e_S} = 16\\
{p_O} = {e_O} = 8\\
{p_{S{O_4}^{2 - }}} = 16 + 8 \times 4 = 48\\
{e_{S{O_4}^{2 - }}} = 16 + 8 \times 4 + 2 = 50\\
Cl{O_4}^ - \\
{p_{Cl}} = {e_{Cl}} = 17\\
{p_O} = {e_O} = 8\\
{p_{Cl{O_4}^ - }} = 17 + 8 \times 4 = 49\\
{e_{Cl{O_4}^ - }} = 17 + 8 \times 4 + 1 = 50\\
C{O_3}^{2 - }:\\
{p_C} = {e_C} = 6\\
{p_O} = {e_O} = 8\\
{p_{C{O_3}^{2 - }}} = 6 + 8 \times 3 = 30\\
{e_{C{O_3}^{2 - }}} = 6 + 8 \times 3 + 2 = 32\\
N{H_4}^ + \\
{p_N} = {e_N} = 7\\
{p_H} = {e_H} = 1\\
{p_{N{H_4}^ + }} = 7 + 1 \times 4 = 11\\
{e_{N{H_4}^ + }} = 7 + 1 \times 4 - 1 = 10
\end{array}\)
