The systematic name for Mg(NO3)2 is magnesium nitrate. Each molecule of this compound contains one atom of magnesium, two atoms of nitrogen and six atoms of oxygen.
Scientists use a standardized method for naming chemical compounds. The first element in the compound's formula acts as a base for the compound's name. The first element listed in Mg(NO3)2 is magnesium. NO3 is a polyatomic ion, or a charged particle containing more than one element. This ion has a single charge even though it contains nitrogen and oxygen. The standardized name for an NO3- ion is nitrate. Therefore, the systematic name of Mg(NO3)2 is magnesium nitrate. Magnesium nitrate is found in the fertilizer blends used by greenhouses.