The chemical formula for barium permanganate is Ba(MnO4)2. Ba is the chemical symbol for barium, Mn is the chemical symbol for manganese and O is the chemical symbol for oxygen. The chemical symbol for each element can be found on the periodic table of elements.
The barium ion contains a plus two charge. Each ion of permanganate contains a charge of minus one. The formula requires two ions of permanganate to balance the charge of the barium. There is one atom of barium, two atoms of manganese and eight atoms of oxygen in the chemical formula for barium permanganate. The molar mass is 375.19 grams per mole.