Please answer a, b and c. I will give good ratings.

Disulfur dinitride, S2N2, is a known compound. In principle, this stoichiometry can exist in several isomeric molecular forms. a. Consider 4-membered ring structures. For each possible isomer, draw proper Lewis structures (always include formal charges!) for three significant nondegenerate resonance contributors. b. Consider catenated (chain-like) structures. Draw a proper Lewis structure for every isomer that possesses no formal charge separation (i.e., formal charges are zero on all atoms). c. The isoelectronic nitrogen oxide species, N2O2, also exists. Of the structures considered in parts (a) and (b), which structure(s) is most likely for the oxygencontaining species? Explain your reasons for excluding the other structures