What is the formula for manganese(II) nitrate?

The chemical formula for manganese(II) nitrate is written as Mn(NO3)2. The Mn represents the element manganese, the N represents the element nitrogen, and the O represents the element oxygen.

The chemical symbol for each element can be found on the periodic table of elements, along with its atomic number and atomic weight. The three after the symbol O indicates that each ion of nitrate contains three atoms of oxygen. The two outside the parenthesis indicates that each molecule of manganese(II) nitrate contains two ions of nitrate, for a total of two atoms of nitrogen and six atoms of oxygen. The Roman numerals describe the charge.