Use electronegativity differences and Figure 2 to classify bonding between chlorine, Cl, and the following elements: calcium, Ca; oxygen, O; and bromine, Br. Indicate the more negative atom in each pair.
Arrange the atoms to form a skeleton structure for the molecule. If carbon is present, it is the central atom. Otherwise, the least-electronegative atom is central (except for hydrogen, which is NEVER central). Then connect the atoms by electron-pair bonds.
Complete just as the other example problems; however, there is an added step.
If too many electrons have been used, subtract one or more lone pairs until the total number of valence electron is correct. Then, move one or more lone electrons pairs to existing bonds between non-hydrogen atoms until the outer shells of all atoms are completely filled.