1) Determine the oxidation number of each element in the following compounds: a) Scandium oxide (ScaO,) Sc C b) Gallium chloride (GaCl) Ga CI c) Hydrogen phosphate ion H 10 d) lodine trifluoride 2

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1) Determine the oxidation number of each element in the following compounds: a) Scandium oxide (ScaO,) Sc C b) Gallium chloride (GaCl) Ga CI c) Hydrogen phosphate ion H 10 d) lodine trifluoride 2. Use the half-reaction method to balance the following redox reactions: (6 points each) a) Mn (aq) + NaBiO,(s) > Bis*(aq) + MnO, (aq) + Na*(a) (in acidic solution) O b) NO, (aq) + Al(s) > NH,(aq) + AI(OH)4 (in basic solution) 3. Use the oxidation number method to balance the following redox equations. Identify the oxidizing agent and reducing agent. E a) PbS(s) + Oz(g) - PbO(s) + SOz(g) b) KCIO, (aq) + HBr(aq) > Brz (1) + HO(1) + KCI(aq)