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2 Atoms, Molecules, and Ions Solutions to Exercises (c) potassium, 1+; perchorate, 1- (d) iron, 2+; nitrate, 1- (e) chromium, 3+; hydroxide, 1- 2.64 (a) copper, 2+; sulfide, 2- (b) silver, 1+; sulfate, 2- (c) aluminum, 3+; chlorate, 1- (d) cobalt, 2+; hydroxide, 1- (e) lead, 2+; carbonate, 2- 2.65 (a) lithium oxide (b) iron(III) chloride (ferric chloride) (c) sodium hypochlorite (d) calcium sulfite (e) copper(II) hydroxide (cupric hydroxide) (f) iron(II) nitrate (ferrous nitrate) (g) calcium acetate (h) chromium(III) carbonate (chromic carbonate) (i) potassium chromate (j) ammonium sulfate 2.66 (a) potassium cyanide (b) sodium bromite (c) strontium hydroxide (d) cobalt(II) sulfide (cobaltous sulfide) (e) iron(III) carbonate (ferric carbonate) (f) chromium(III) nitrate (chromic nitrate) (g) ammonium sulfite (h) sodium dihydrogen phosphate (i) potassium permanganate (j) silver dichromate 2.67 (a) (b) (c) (d) Zn(NO₃)₂ (e) HgBr₂ (f) Fe₂(CO₃)₃ (g) NaBrO 2.68 (a) (b) Zn(NO₃)₂ (c) Ba(BrO₃)₂ (d) Fe(ClO₄)₂ (e) Co(HCO₃)₂ (f) Cr(CH₃COO)₃ (g) 2.69 (a) bromic acid (b) hydrobromic acid (c) phosphoric acid (d) HCIO (e) HIO₃ (f) 2.70 (a) HI (b) HCIO₃ (c) HNO₂ (d) carbonic acid (e) perchloric acid (f) acetic acid 2.71 (a) sulfur hexafluoride (b) iodine pentafluoride (c) xenon trioxide (d) (e) HCN (f) 2.72 (a) dinitrogen monoxide (b) nitrogen monoxide (c) nitrogen dioxide (d) dinitrogen pentoxide (e) dinitrogen tetroxide 2.73 (a) ZnCO₃, ZnO, (b) HF, SiO₂, SiF₄, (c) (d) PH₃ (e) Cd, Cd(ClO₄)₂ (f) VBr₃ 2.74 (a) (b) Ca(CIO)₂ (c) HCN 28