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Magnesium (pronounced /maegËniËziÉm/) mÃ¦gËniËziÉm is a chemical element with the Symbol, mg atomic number, 12 atomic weight.24 3050 and common oxidation +number. 2
The idea here is that you need to use the chemical formula for magnesium nitride, #Mg_3N_2#, to calculate the mass of one mole of the compound, i.e. its molar mass. So, magnesium nitride is an ionic compound made up of magnesium cations, #Mg^(2+)#, and nitride anions, #N^(3-)#. The subscripts used in the compound's chemical formula tell you how many ions you get in one formula unit of magnesium nitride. In this case, you have.