9. For each of the following chemical formulas, indicate if the substance is ionic or covalent. (4 marks: 1 mark each) a) AgF The substance is ionic, because there is one metal (Ag) and one halogen non- metal (F). b) C 6 H 12 O 6 The substance is covalent, because all elements (C, H, O) are non-metal. c) FeCl 3 The substance is ionic, because there is one transition metal (Fe) and one halogen non-metal (Cl). d) SF 6 The substance is covalent, because both elements (S, F) fall under non-metal. 10.Describe three differences between the bonding in ionic and covalent substances.
11. Draw a neat Lewis structure for each of the following compounds. ( Note: Both ionic and covalent types have been included.) Make sure your diagram clearly distinguishes the type of bonding. Label your structure as “ionic” or “covalent.” If it is covalent, identify the single, double, and triple bonds, if present. (14 marks: 2 marks each) a) KBr b) CaCl 2 c) Li 2 O d) SiCl 4 e) PF 3 f) CS 2 g) HCN