Question

Write the chemical name for the ionic compound ${\mathbf{Mg}}_{\mathbf{3}}{\mathbf{N}}_{\mathbf{2}}$ and mention its molecular weight in brackets after the name.

Answer 1

${\mathbf{Mg}}_{\mathbf{3}}{\mathbf{N}}_{\mathbf{2}}$ :

• The chemical name of ${\mathbf{Mg}}_{\mathbf{3}}{\mathbf{N}}_{\mathbf{2}}$ is magnesium nitride.
• This ionic compound is an inorganic compound which exists as greenish yellow powder at room temperature and pressure.
• It is composed of magnesium and nitrogen with molecular weights of 24.305 and 14 gm/mol respectively. Hence the molecular weight of ${\mathbf{Mg}}_{\mathbf{3}}{\mathbf{N}}_{\mathbf{2}}$ is 100.915 gm/mol [(24.305*3)+(14*2)]

Thus, the chemical name and molecular weight for the ionic compound ${\mathbf{Mg}}_{\mathbf{3}}{\mathbf{N}}_{\mathbf{2}}$ is magnesium nitride (100.915 gm/mol).