Question

Write the chemical formula for Magnesium Nitride.

Answer 1

• The magnesium ion is denoted by ${\mathrm{Mg}}^{2+}$.
• The Nitride ion is denoted by ${\mathrm{N}}^{3-}$.
• Interchanging the valencies, we get ${\mathrm{Mg}}^{2+}⥂{\mathrm{N}}^{3-}$ becomes ${\mathrm{Mg}}_3{\mathrm{N}}_2$.