The name of Mg(NO3)2 is magnesium nitrate.
Magnesium nitrate is an inorganic compound made up of magnesium ions (Mg2+) and nitrate ions (NO3–). In this formula, ‘Mg’ stands for magnesium, and ‘NO3’ represents the nitrate ion. The ‘2’ in the formula indicates that there are two nitrate ions for every magnesium ion in the compound. Magnesium nitrate is commonly used in fertilizers and as a dehydrating agent in the chemical industry.