Bonding. Writing Formula and Naming Compounds. STEPS. 1. Decide if compound is Ionic or Covalent: All Ionic Compounds must have a Cation (Positive Ion) and an Anion (Negative Ion) Covalent Compounds contain either Nonmetals or Metalloids. Steps For Ionic Compounds.
Writing Formula and Naming Compounds
Note: Because ‘2’ phosphates are needed to equal the charge of 3 Fe +2, phosphate was placed inside ( ).
The following prefixes are used to indicate the number of atoms present in the compound for each element. Note: atoms do notget reduced as in Ionic Compounds.
Since ‘tetra’ means 4, there are 4 atoms of Chlorine in the compound and the formula is:
Since “di’ means 2 and “tri’ means 3, the formula is: