Considering your answers to Exercise 52, what conclusions can you draw concerning the structures of species containing the same number of atoms and the same number of valence electrons?

Data from Exercises 52

Draw a Lewis structure that obeys the octet rule for each of the following molecules and ions. In each case the first atom listed is the central atom.
\(\mathrm{POCl}_{3}, \mathrm{SO}_{4}{ }^{2-}, \mathrm{XeO}_{4}, \mathrm{PO}_{4}{ }^{3-}, \mathrm{ClO}_{4}{ }^{-}\)
\(\mathrm{NF}_{3}, \mathrm{SO}_{3}{ }^{2-}, \mathrm{PO}_{3}{ }^{3-}, \mathrm{ClO}_{3}{ }^{-}\)
\(\mathrm{ClO}_{2}{ }^{-}, \mathrm{SCl}_{2}, \mathrm{PCl}_{2}^{-}\)