Al(CN)3 is the chemical formula for aluminum cyanide, according to EndMemo. Al is the chemical symbol for aluminum, C is the chemical symbol for carbon, and N is the chemical symbol for nitrogen. The chemical formula for cyanide is CN, indicating that cyanide is formed by combining carbon and nitrogen.
The chemical symbol for each element can be found on the periodic table of elements. The number after the parenthesis is typically written in subscript; it indicates the number of each atom of each element that is present in the compound. There is one atom of aluminum, three atoms of carbon and three atoms of nitrogen in aluminum cyanide.