Please help me with 1,2,3 and 4. I'm confused. Thank you
Structure of Molecules and Molecular Ions On a separate sheet of paper, set up the following table (with eight columns) for each of the molecules/molecular ions that are assigned to you/your group. The central atom of the molecule/molecular ion is italicized. Complete the table (as outlined above) for the following molecules/molecular ions, all of the which obey the Lewis octet rule. Complete those that are assigned by your laboratory instructor. H_2O^+ NH_3 NH_4^+ CH_3^- SnH_4 BF_4^- PO-4^3- PF_3 AsH_3 SiF_4 H_2S NH_2^- Complete the table (as outlined above) for the following molecules/molecular ions, none of which obey the Lewis octet rule. Complete those that are assigned by your laboratory instructor. GaI_3 PCl_2F_3 BrF_3 XeF_2 XeF_4 XeOF_2 XeOF_4 SbF_6^- SF_6 SnF_6^2- IF_4^- IF_4^+ Complete the table (as outlined above) for the following molecules/molecular ions. No adherence to the Lewis octet rule is indicated. Complete those that are assigned by your laboratory instructor. AsF_3 ClO_2^- CF_3Cl SnF_2 SnF_4 PF_4^+ PF_5 SO_4^2- CN_2^2- KrF_2 TeF_6 AsF_5 Complete the table (as outlined above) for the following molecules/molecular ions. For molecules or molecular ions with two or more atoms considered as central atoms, consider each atom separately in the analysis according to Table D3.3. Complete those that are assigned by your laboratory instructor. OPCl_3 H_2CCH_2 CH_3NH_3^+ Cl_3CCF_3 Cl_2O ClCN COCl_2 OCCCO CO_2 O_3 NO_3^- TeF_2(CH_3)_4