(Solved): 3. Draw the Lewis dot structure for each of the following compounds ( \( 3 \mathrm{pts} \) each) a ...

3. Draw the Lewis dot structure for each of the following compounds ( \( 3 \mathrm{pts} \) each) a) \( \mathrm{PF}_{3} \) b) \( \mathrm{SCl}_{5}^{+} \) c) \( \mathrm{C}_{3} \mathrm{H}_{6} \) d) \( \mathrm{S}_{2} \mathrm{O}_{3}{ }^{2-} \) (one central atom) 4. Consider the following resonance structures for the cyanate ion, \( \mathrm{OCN}^{-} \) a. Calculate the formal charge on the oxygen atom, carbon atom and nitrogen atom in each structure, then determine which structure is most stable and which structure is least stable. (5 pts)