Chemistry 143
Nomenclature Dr. Caddell
1.) For each of the following formulas write the category that the compound belongs in and the
correct name. The possible categories are binary ionic, binary molecular, ternary ionic, acid, or
hydrate.
FORMULA
CATEGORY
NAME
1.) AgCl
Binary ionic
Silver chloride
2.) Ca3P2
Binary ionic
Calcium phosphide
3.) P2O5
Binary molecular
Diphosphorous pentoxide
4.) NaH2PO4
Ternary ionic
Sodium dihydrogen phosphate
5.) Sr(C2H3O2)2
Ternary ionic
Strontium acetate
6.) Cl2O7
Binary molecular
Dichlorine heptoxide
7.) H2Te
Acid
Hydrotelluric acid
8.) Cs3N
Binary ionic
Cesium nitride
9.) HBrO
Acid
Hypobromous acid
10.) H2SO3
Acid
Sulfurous acid
11.) MgS
Binary ionic
Magnesium sulfide
12.) S2F5
Binary molecular
Disulfur pentafluoride
Hydrate
Cobalt(II) chloride hexahydrate
Ternary ionic
Iron(III) phosphate
13.) CoCl2·6H2O
14.) FePO4
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Chemistry 143
FORMULA
Nomenclature Dr. Caddell
CATEGORY
NAME
Ternary ionic
Ammonium iodate
16.) HIO
Acid
Hypoiodous acid
17.) HI
Acid
Hydroiodic acid
Binary ionic
Chromium(VI) oxide
Binary molecular
Sulfur trioxide
Hydrate
Copper(II) sulfate pentahydrate
Acid
Nitrous acid
22.) V(SO4)2
Ternary ionic
Vanadium(IV) sulfate
23.) NaHCO3
Ternary ionic
Sodium hydrogen carbonate
or sodium bicarbonate
Hydrate
Beryllium nitrate tetrahydrate
Binary ionic
Gold(III) nitride
15.) NH4IO3
18.) CrO3
19.) SO3
20.) CuSO4·5H2O
21.) HNO2
24.) Be(NO3)2·4H2O
25.) AuN
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Chemistry 143
Nomenclature Dr. Caddell
2.) For each of the following names write the category that the compound belongs in and the correct
formula. The possible categories are binary ionic, binary molecular, ternary ionic, acid, or hydrate.
FORMULA
CATEGORY
NAME
Hydrate
Sodium sulfate decahydrate
2.) Al2S3
Binary ionic
Aluminum sulfide
3.) Cl2O
Binary molecular
Dichlorine monoxide
4.) H2Se
Acid
Hydroselenic acid
Ternary ionic
Molybdenum (III) acetate
6.) HBrO
Acid
Hypobromous acid
7.) N2O3
Binary molecular
Dinitrogen trioxide
Ternary ionic
Rubidium phosphite
Acid
Hydrocyanic acid
Ternary ionic
Cadmium phosphite
11.) H3PO4
Acid
Phosphoric acid
12.) Hg2Cl2
Binary ionic
Mercury(I) chloride*
Binary molecular
Sulfur mononitride
Acid
Perchloric acid
1.) Na2SO4·10H2O
5.) Mo(C2H3O2)3
8.) Rb3PO3
9.) HCN
10.) Cd3(PO3)2
13.) SN
14.) HClO4
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Chemistry 143
FORMULA
Nomenclature Dr. Caddell
CATEGORY
NAME
15.) Zn(NO3)2
Ternary ionic
Zinc nitrate
16.) Ni(OH)2
Ternary ionic
Nickel (II) hydroxide
17.) K2CO3
Ternary ionic
Potassium carbonate
Acid
Hydroiodic acid
19.) N2O4
Binary molecular
Dinitrogen tetroxide
20.) SO3
Binary molecular
Sulfur trioxide
Hydrate
Aluminum sulfate nonahydrate
Acid
Acetic acid
23.) GaN
Binary ionic
Gallium nitride**
24.) Al2O3
Binary ionic
Aluminum oxide
Acid
Bromic acid
18.) HI
21.) Al2(SO4)3·9H2O
22.) HC2H3O2
25.) HBrO3
+
* The mercury(I) ion is Hg 22 + and not Hg . MEMORIZE THIS!
** Gallium has a +3 charge here.
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