<p>17. In a sample of solid Al(NO3)3, the ratio of aluminum ions to nitrate ions is (1) 1:1 (2) 1:2 (3) 1:3 (4) 1:6</p><p>19. What is the total number of atoms in (NH4)2SO4? (1) 10 (2) 11 (3) 14 (4) 15 22. Write the correct formula for the following binary ionic compounds.</p><p>(a) Lithium fluoride LiF </p><p>(b) Calcium oxide CaO </p><p>(c) Aluminum nitride AlN </p><p>(d) Beryllium chloride BeCl2 </p><p>(e) Potassium iodide KI</p><p>(f) Aluminum oxide Al2O3 23. Write the correct formula for the following binary molecular compounds.</p><p>(a) Carbon monoxide CO</p><p>(b) Boron tribromide BBr3 </p><p>(c) Sulfur hexafluoride SF6</p><p>(d) Carbon dioxide CO2</p><p>(e) Carbon tetrabromide CBr4</p><p>(f) Nitrogen dioxide NO2 24. Write the correct formulas for the following compounds that contain polyatomic ions.</p><p>(a) Sodium hydroxide NaOH </p><p>(b) Potassium nitrate KNO3</p><p>(c) Magnesium sulfate MgSO4</p><p>(d) Aluminum phosphate AlPO4</p><p>(e) Aluminum nitrate Al(NO3)3</p><p>(f) Ammonium nitrate NH4NO3 25. Name each of the following binary ionic compounds.</p><p>(a) NaBr sodium bromide</p><p>(b) MgS magnesium sulfide</p><p>(c) CaO calcium oxide</p><p>(d) MgCl2 magnesium chloride </p><p>(e) AlF3 aluminum fluoride </p><p>(f) CaI2 calcium iodide 26. Name each of the following binary molecular compounds.</p><p>(a) O2F2 dioxygen difluoride </p><p>(b) SiF4 silicon tetrafluoride </p><p>(c) S4N4 tetrasulfur tetranitride </p><p>(d) SF2 sulfur difluoride </p><p>(e) H2S dihydrogen monosulfide </p><p>(f) P4O10 tetraphosphorus decaoxide 27. Name each of the following compounds.</p><p>(a) Ca(NO3)2 calcium nitrate (b) KOH potassium hydroxide</p><p>(c) MgCO3 magnesium carbonate</p><p>(d) Na3PO4 sodium phosphate</p><p>(e) LiNO3 lithium nitrate</p><p>(f) Mg(C2H3O2)2 magnesium acetate 28. Write formulas for each of the following compounds.</p><p>(a) iron(II) oxide FeO </p><p>(b) tin(II) sulfide SnS </p><p>(c) copper(I) chloride CuCl </p><p>(d) mercury(II) iodide HgI2</p><p>(e) lead(II) nitrate Pb(NO3)2</p><p>(f) iron(III) oxide Fe2O3 29. Write the names of each of the following using stock nomenclature. (a) CuCl copper(I) chloride (b) FeS iron(II) sulfide</p><p>(c) HgI2 mercury(II) iodide</p><p>(d) Pb(NO3)2 lead(II) nitrate</p><p>(e) Sn(OH)2 tin(II) hydroxide</p><p>(f) Fe2O3 iron(III) oxide</p>