Steps for writing a chemical formula Step 1: First, you have to decide the type of the bond. Step 2: Now, write down the symbol of the polyatomic ion or the element. Step 3: Now, if the prefix was used, you’ll have to add a subscript.What are the formulas for chemistry?
In chemistry, the empirical formula of a chemical is a simple expression of the relative number of each type of atom or ratio of the elements in the compound. Empirical formulas are the standard for ionic compounds, such as CaCl.