Formulas and Names of Binary Covalent Compounds
FORMULAS AND NAMES OF BINARY COVALENT COMPOUNDS
Fill the blanks in the following table.
Formula Name Formula Name
CO tetraphosphorus decaoxide carbon monoxide P4O10
carbon disulfide NH CS2 3 ammonia
SO sulfur hexafluoride 2 sulfur dioxide SF6
SiC silicon carbide N2O3 dinitrogen trioxide
dinitrogen monoxide OF N2O 2 oxygen difluoride
silicon tetrachloride P4S3 tetraphosphorus trisulfide SiCl4
IF7 iodine heptafluoride CH4 methane
sulfur trioxide H2O water SO3
dihydrogen disulfide H2S2 KrF2 krypton difluoride
dinitrogen pentaoxide Cl2O7 dichlorine heptaoxide N2O5
FORMULAS AND NAMES OF BINARY IONIC COMPOUNDS
(1) Write the formula for each ion below the ion’s name. (2) Fill in the blanks with the correct formula and name of the compound formed by the combination of ions.
Chloride ion Oxide ion Bromide Sulfide ion Nitride ion
─ ─ ─ ─ ─ Cl O2 Br S2 N3
Sodium ion NaBr NaCl Na O Na S Na N 2 2 3
+ Na sodium chloride sodium oxide sodium bromide sodium sulfide sodium nitride
Copper (I) ion CuCl Cu O CuBr Cu S Cu N 2 2 3 + Cu copper (I) chloride copper (I) oxide copper (I) bromide copper (I) sulfide copper (I) nitride
Calcium ion CaCl CaO CaBr CaS Ca N 2 2 3 2
2+ Ca calcium chloride calcium oxide calcium bromide calcium sulfide calcium nitride
Iron (II) ion FeCl FeO FeBr FeS Fe N 2 2 3 2
2+ Fe iron (II) chloride iron (II) oxide iron (II) bromide iron (II) sulfide iron (II) nitride
Iron (III) ion FeCl Fe O FeBr Fe S FeN 3 2 3 3 2 3
3+ Fe iron (III) chloride iron (III) oxide iron (III) bromide iron (III) sulfide iron (III) nitride
Aluminum ion AlCl Al O AlBr Al S AlN 3 2 3 3 2 3
3+ Al aluminum chloride aluminum oxide aluminum bromide aluminum sulfide aluminum nitride
FORMULAS OF IONIC COMPOUNDS WITH MONO- AND POLYATOMIC IONS
For each box write the chemical formula of the compound formed by the cation at the head of the column and the anion at the left of the row.
+ 2+ + 3+ + 2+ + 2+ Li Mg NH 4 Al Na Ba K Ca
− Br LiBr MgBr2 NH4Br AlBr3 NaBr BaBr2 KBr CaBr2
2− MgSO (NH ) SO Al (SO ) Na SO BaSO K SO CaSO SO 4 Li2SO4 4 4 2 4 2 4 3 2 4 4 2 4 4
− OH LiOH Mg(OH)2 Al(OH)3 NaOH Ba(OH)2 KOH Ca(OH)2
− F LiF MgF2 NH4F AlF3 NaF BaF2 KF CaF2
2− MgO Al O Na O BaO K O CaO O Li2O 2 3 2 2
− Mg(NO ) NH NO Al(NO ) NaNO Ba(NO ) KNO Ca(NO ) NO 3 LiNO3 3 2 4 3 3 3 3 3 2 3 3 2
3− Mg (PO ) (NH ) PO AlPO Na PO Ba (PO ) K PO Ca (PO ) PO 4 Li3PO4 3 4 2 4 3 4 4 3 4 3 4 2 3 4 3 4 2
− Cl LiCl MgCl2 NH4Cl AlCl3 NaCl BaCl2 KCl CaCl2
− 2 MgS (NH ) S Al S Na S BaS K S CaS S Li2S 4 2 2 3 2 2
− I LiI MgI2 NH4I AlI3 NaI BaI2 KI CaI2
2− MgCO (NH ) CO Al (CO ) Na CO BaCO K CO CaCO CO 3 Li2CO3 3 4 2 3 2 3 3 2 3 3 2 3 3
FORMULA-TO-NAME EXERCISE
Give a correct chemical name for each of the following compounds.
1. MgO magnesium oxide
2. PbI2 lead (II) iodide 3. FeS iron (II) sulfide
4. ZnSO4 zinc sulfate
5. Li2CO3 lithium carbonate
8. K2SO3 potassium sulfite
9. CrCl3 chromium (III) chloride
10. Sr(C2H3O2)2 strontium acetate
11. Mg3N2 magnesium nitride
12. Ca3(PO4)2 calcium phosphate
13. SnO2 tin (IV) oxide
14. KMnO4 potassium permanganate
15. Hg2Cl2 mercury (I) chloride
16. NaHCO3 sodium hydrogen carbonate (sodium bicarbonate)
17. CCl4 carbon tetrachloride
18. NO2 nitrogen dioxide
19. N2O5 dinitrogen pentaoxide
20. PBr5 phosphorus pentabromide
21. CaO2 calcium peroxide 22. HCl(aq) hydrochloric acid
23. HNO3(aq) nitric acid
24. H2SO3(aq) sulfurous acid
25. H3PO4(aq) phosphoric acid
NAME-TO-FORMULA EXERCISE
Give a correct chemical name for each of the following compounds.
1. Potassium iodide KI
2. Barium sulfate BaSO4
3. Aluminum nitrate Al(NO3)3
4. Copper (II) carbonate CuCO3
5. Gold (III) chloride AuCl3
6. Ferric hydroxide Fe(OH)3
7. Lead (II) chromate PbCrO4
8. Nickel (II) hydroxide Ni(OH)2
9. Mercury (II) bromide HgBr2
10. Silver acetate AgC2H3O2
11. Magnesium chlorate Mg(ClO3)2
12. Sodium peroxide Na2O2
13. Manganese (II) phosphate Mn3(PO4)2
14. Ammonium sulfide (NH4)2S
15. Platinum (IV) fluoride PtF4
16. Chromium (III) hydroxide Cr(OH)3
17. Calcium oxalate CaC2O4
18. Antimony trichloride SbCl3
19. Ammonia NH3
20. Silicon dioxide SiO2 21. Carbon monoxide CO 22. Hydrobromic acid HBr(aq)
23. Nitrous acid HNO2(aq)
24. Acetic acid HC2H3O2(aq)
25. Sulfuric acid H2SO4(aq)
COMBINED NOMENCLATURE EXERCISE
Indicate the covalent compounds with *. Write the complete chemical formulas for the following compounds.
1. Barium sulfate BaSO4 11. Calcium chloride CaCl2
2. Potassium oxide K2O 12. Lithium hydroxide LiOH
3. Aluminum iodide AlI3 13. Carbon disulfide * CS2
4. Tin (IV) fluoride SnF4 14. Manganese (II) phosphide Mn3P2
5. Iron (III) sulfite Fe2(SO3)3 15. Beryllium acetate Be(C2H3O2)2
6. Mercury (II) nitrite Hg(NO2)2 16. Copper (I) phosphate Cu3PO4
7. Dinitrogen pentoxide * N2O5 17. Hydrogen peroxide * H2O2
8. Boron tribromide * BBr3 18. Nickel (II) chromate NiCrO4 9. Sodium hydrogen carbonate (sodium bicarbonate) NaHCO3 19. Hydrocyanic Acid * HCN(aq)
10. Nitrous acid * HNO2(aq) 20. Silver hypochlorite AgClO
Indicate covalent compounds with *. Write the complete name for the following chemicals.
1. Mg(CN)2 magnesium cyanide 10. Li3PO4 lithium phosphate
2. P4O10 * tetraphosporus decaoxide 11. KMnO4 potassium permanganate
3. (NH4)2CO3 ammonium carbonate 12. Hg(OH)2 mercury (II) hydroxide
4. CdSe cadmium selenide 13. Cr3(BO3)2 chromium (II) borate
5. H2SO3(aq) * sulfurous acid 14. OF2 * oxygen difluoride
6. N2(g) nitrogen 15. HBrO3(aq) * bromic acid
7. CsHS cesium hydrogen sulfide 16. SiCl4 * silicon tetrachloride potassium dihydrogen 8. KH2PO4 phosphate 17. HBr(aq) * hydrobromic acid cadmium nitrate 9. Cd(NO3)2·7H2O heptahydrate 18. AsH3 * arsine