Nonmetals combine with nonmetals to form covalent compounds. Table shows the number of electrons needed by an atom of a nonmetal to achieve a stable noble gas electron arrangement. The number of electrons needed is a measure of the combining power of the nonmetal. 1. Write down the cation symbol with charge 2. Write down the anion symbol with charge 3.
Put together the cation and anion so that the charges are balanced to make a neutral compound Writing covalent compounds involves the use of Greek prefixes. They are listed in the table to the right.
The prefixes are used to indicate the amount of each atom in Sep 08, 2018 Name the first element in the compound. Molecular formulas are read from left to right, just like English words. Generally, the first atom (the 1 on the left of the molecular formula) is also the leastabundant atom in Naming binary (twoelement) covalent compounds is similar to naming simple ionic compounds. The first element in the formula is simply listed using the name of the element. The first element in the formula is simply listed using the name of the element.