Write Lewis structures for the following. Show all resonancestructures where applicable.a. \(\mathrm{NO}_{2}^{-}, \mathrm{NO}_{3}^{-}, \mathrm{N}_{2} \mathrm{O}_{4}\left(\mathrm{N}_{2} \mathrm{O}_{4} \text { exists as } \mathrm{O}_{2} \mathrm{N}-\mathrm{NO}_{2} .\right)\) b. \(\mathrm{OCN}^{-}, \mathrm{SCN}^{-}, \mathrm{N}_{3}^{-}\) (Carbon is the central atom in \(\mathrm{OCN}^{-}\) and \(\mathrm{SCN}^{-} .\) )

(a) NO2-: Two resonance structures with N as the central atom, one N-O single bond, one N=O double bond and formal charge -1 on single-bonded O. NO3-: Three resonance structures with N as the central atom, two N=O double bonds, one N-O single bond and formal charge -1 on single-bonded O. N2O4: One structure with two NO2 groups interconnected via O—N—O single bond and N=O double bond. (b) OCN-: One structure with C as the central atom, a C—O single bond with a -1 formal charge on O, and a C=N double bond. SCN-: One structure with C as the central atom, a C—S single bond with a -1 formal charge on S, and a C≡N triple bond. N3-: Two resonance structures, one N—N single bond, one N≡N triple bond, and formal charge -1 on the terminal N with 2 lone pairs.