Writing Lewis structures for
covalent species
These rules are for covalently bonded
cmpds only (btn 2 or more nonmetals)
Do not use them for ionic cmpds.
1. Count the total no. of valence electrons
(the group no. is equal to the no. of valence
electrons).
if the species is an anion, increase the no. of
valence electrons by the charge on the ion