Introduction to Chemical Principles, 11e (Stoker)
Chapter 8 Chemical Nomenclature
8.1 Multiple Choice
1) Ionic compounds often contain ________.
A) metallic elements only
B) nonmetallic elements only
C) both metallic and nonmetallic elements
D) neither metallic nor nonmetallic elements
2) Which of the following pairs will form ionic bonds?
A) N, C
B) Na, Ca
C) Cs, Br
D) S, Cl
3) Which of the following pairs will form covalent bonds?
A) Ca, Cl
B) S, O
C) K, N
D) Fe, Br
4) Which compound contains only covalent bonds?
A) NH4OH
B) Ca3(PO4)2
C) NO2
D) NaCl
5) Which of the following is not a binary compound?
A) K2CO3
B) FeCl3
C) Ca3P2
D) PCl5
6) Which of the following is not a binary compound?
A) H2CO
B) P2O3
C) PH3
D) HBr
7) Which compound is a variable charge binary ionic compound?
A) MgBr2
B) Cr2O3
C) LiCl
D) K2O
8) Which compound is a fixed charge binary ionic compound?
A) Na2O
B) SnCl2
C) FeI3
D) MnO2
9) Which of the following is a variable metal?
A) Zn
B) Ca
C) Ni
D) Cs
10) In which of the following sequences of fixed-charge ions are all of the ionic charges correct?
A) S2−, Na+, Zn+
B) F−, N3−, Fr2−
C) O2−, N3−, Cl2−
D) Li+, S2−, Ba2+
11) Elements in group VA of the periodic table ________.
A) form ions with a charge of 4+
B) form ions with a charge of 5+
C) form ions with a charge of 3−
D) form ions with a charge of 2−
12) Which of the following ionic compounds is named without using a Roman numeral?
A) AuCl3
B) CuS
C) PbO
D) CaO
13) The correct name for the ionic compound SnS2 is ________.
A) sodium sulfide
B) selenium sulfide
C) tin(II) sulfide
D) tin(IV) sulfide
14) Iron pyrite (fool’s gold) is iron(II) sulfide. What is its formula?
A) FeS
B) FeSO3
C) FeSO4
D) Fe2S3
15) Which of the following names is paired with an incorrect formula?
A) copper(II) phosphide – Cu3P2
B) lithium bromide – LiBr
C) iron(III) chloride – FeCl3
D) copper(II) oxide – Cu2O
16) The Roman numeral (II) in the name nickel(II) fluoride indicates that ________.
A) nickel has a 2+ charge
B) there are two times as many nickel atoms present as oxygen atoms
C) there are two nickel atoms per formula unit
D) there are two oxygen atoms per formula unit
17) What is the name of FeS?
A) iron sulfate
B) iron sulfide
C) iron(II) sulfide
D) iron(III) sulfide
18) What is the correct formula for the compound that forms when calcium and sulfur react?
A) CaS
B) CaSO4
C) CaSO3
D) Ca3S2
19) Which of the following ions is incorrectly named?
A) Cr6+ chromium(VI) ion
B) Se2− selenide ion
C) Cs+ cesium(I) ion
D) S2− sulfide ion
20) Which of the following ions is incorrectly named?
A) P3−
phosphide ion
B) Se2− selenide ion
C) Ag+ silver(I) ion
D) N−3 nitride ion
21) For the compound CrO3, what is the correct Roman numeral in the name, chromium(__)
oxide?
A) II
B) III
C) IV
D) VI
22) Which of the following pairs has an error in the formula or in the name?
Formula Chemical Name
A) SrCl strontium chloride
B) ICl iodine monochloride
C) BaS barium sulfide
D) N2S3 dinitrogen trisulfide
23) The formula of beryllium azide is Be(N3)2 (azide is a polyatomic ion). What is the formula
of scandium(III) azide?
A) Sc(N3)3
B) Sc(N3)2
C) ScN3
D) Sc3N3
24) Which of the following formulas in incorrect for a cobalt(III) compound?
A) CoCl3
B) CoCO3
C) Co2O3
D) CoPO4
25) What is the chemical name of Pb3(PO4)4?
A) lead(III) phosphate
B) lead(IV) phosphate
C) lead phosphate
D) lead triphosphide
26) Which of the following ions is incorrectly named?
A) Cr6+ chromium(VI) ion
B) Se2− selenide ion
C) Mg2+ magnesium ion
D) C2H3O2− oxalate ion
27) Which of the following pairs has an error in the formula or in the name?
Formula Chemical Name
A) SrBr2 strontium bromide
B) Zn(OH)2 zinc hydroxide
C) Ba3(PO4)2 barium phosphate
D) PCl3 phosphorous(III) chloride
28) Which of the following pairs has an error in the formula or in the name?
Formula Chemical Name
A) Cl2O7 dichlorine heptoxide
B) Mn(ClO4)2 manganese(II) perchlorate
C) AuF3 gold fluoride
D) CCl4 carbon tetrachloride
29) Which of the following pairs has an error in the formula or in the name?
Formula Chemical Name
A) Ag2CO3 silver carbonate
B) MnO2 manganese(IV) oxide
C) CoO cobalt oxide
D) Li2S lithium sulfide
30) Which of the following statements about polyatomic ions is correct?
A) All have names which end in -ate.
B) All must contain oxygen.
C) Negative ions are more common than positive ions.
D) All carry a charge of two.
31) Which one of the following polyatomic ions does not contain oxygen?
A) hydroxide
B) ammonium
C) nitrate
D) sulfate
32) Which of the following is the formula for the phosphite ion?
A) PO4-3
B) PO3-3
C) P2O4-2
D) KO-2
33) Which one of the following polyatomic ions carries a 1+ charge?
A) nitrite
B) hydroxide
C) carbonate
D) ammonium
34) Which of the following will have a charge that is the same as the hydroxide ion?
A) ammonium ion
B) nitrate ion
C) sulfate ion
D) carbonate ion
35) Which of the following atoms can form an ion that has the same charge as the ammonium
ion?
A) K
B) Pb
C) Ca
D) O
36) Which one of the following compound names is paired with an incorrect formula?
A) lithium acetate – LiC2H3O2
B) gold(I) sulfate – Au2SO4
C) ammonium carbonate – (NH4)2CO3
D) potassium carbonate – KHCO3
37) The correct name for CaCO3 is
A) calcium carbon trioxide.
B) calcium(II) carbonate.
C) calcium carbonate.
D) calcium monocarbonate.
38) The correct name for the ionic compound KClO3 is ________.
A) potassium chlorine oxide
B) potassium chloride
C) potassium chlorite
D) potassium chlorate
39) Which of the following formulas is paired with an incorrect name?
A) Ca3(PO4)2 – calcium phosphate
B) CuCO3 – copper carbonate
C) SnCl2 – tin(II) chloride
D) CrCl3 – chromium(III) chloride
40) The correct name for Fe2 (SO4)3 is
A) iron III) sulfate.
B) iron(II) sulfide.
C) iron(II) sulfate.
D) iron(III) sulfide.
41) Which one of the following compounds does not have a formula which contains parentheses?
A) copper(II) nitrate
B) sodium hydroxide
C) ferrous nitrate
D) ammonium sulfate
42) What is the correct formula for manganese(III) cyanide?
A) Mn(CN)3
B) MnSCN
C) Mn(SCN)3
D) MnCN
43) What is the correct name for the following compound, (NH4)3PO4?
A) triammonium phosphate
B) nitrogen tetrahydride phosphorous
C) ammonium phosphate
D) ammonium phosphide
44) What compound has the –ite suffix in its name?
A) KNO3
B) CsCl
C) Cu3(PO4)2
D) Li2SO3
45) What would be the name of the compound, Na2(XO3) if X is a nonmetal on period 3 that
forms a monoatomic anion of −2?
A) sodium sulfate
B) sodium sulfite
C) sodium chlorate
D) sodium phosphate
46) The correct name for the compound N2O4 is ________.
A) nitrogen oxide
B) nitrogen (IV) oxide
C) dinitrogen tetroxide
D) nitrooxide
47) Which of the following is a molecular compound that contains 5 atoms per molecule?
A) silicon tetrachloride
B) sulfur dioxide
C) dinitrogen pentoxide
D) carbon dioxide
48) Almost all binary molecular compounds have names which end in the suffix ________.
A) -ate
B) -ide
C) –ite
D) –ic
49) Which of the following compounds has a name which contains the prefix di-?
A) K2S
B) SO2
C) Al(NO3)3
D) NBr3
50) Which of the following compounds has a name that is an exception to the rule for naming
molecular compounds?
A) P4O10
B) PF3
C) NH3
D) S2Cl2
51) What is the correct name for Cl2O7?
A) chloric acid
B) chlorine oxide
C) dichloride oxide
D) dichlorine heptoxide
52) The chemical formula for heptasulfur dioxide is ________.
A) O2S
B) S7O2
C) SO2
D) S2O7
53) The correct name for the pure, gaseous HI is ________.
A) iodate
B) hydrogen iodide
C) hydrogen monoiodide
D) hydroiodic acid
54) Which of the following acids is named using the prefix hydro-?
A) HBr
B) HNO2
C) HC2H3O2
D) H2SO4
55) Which of the following is not an oxyacid?
A) hypochlorous acid
B) nitrous acid
C) hydrobromic acid
D) sulfuric acid
56) Which of the following acids is incorrectly named?
A) HBrO3 – perbromic acid
B) HNO3 – nitric acid
C) HClO – hydrochlorous acid
D) H2S – hydrosulfuric acid
57) The correct name for aqueous HCN is ________.
A) hydrocyanic acid
B) cyanic acid
C) cyanous acid
D) hydrogen cyanide
58) What is the correct formula for hydrosulfuric acid?
A) H2S (aq)
B) H2SO4
C) H2SO3
D) H2S (g)
59) An oxyacid containing two fewer oxygen atoms than the “-ic” acid would be the ________.
A) …..ous acid
B) per……ic acid
C) hypo……ous acid
D) per…..ic acid
60) What is the correct formula of iodic acid?
A) HIO
B) HIO2
C) HIO3
D) HIO4
61) What is the correct name for the acid HBrO?
A) bromous acid
B) bromic acid
C) perbromic acid
D) hypobromous acid
62) Which of the following acids is incorrectly named?
Acid Name
A) HCl (g) hydrochloric acid
B) HBrO hypobromous acid
C) H3PO4 phosphoric acid
D) HNO2 nitrous acid
63) Which of following is an oxyacid?
A) hydrobromic acid
B) hydrosulfuric acid
C) sulfuric acid
D) hydrocyanic acid
64) Which of the following compounds is not an acid?
A) H2S
B) HCN
C) HC2H3O2
D) PH3
65) Which of the following is an acid?
A) Ca(C2H3O2)2
B) MgSO4
C) NH4Cl
D) H3PO4
66) Which of the following acids is incorrectly named?
Acid Name
A) HI (aq) hydrogen iodide
B) HClO2 chlorous acid
C) H2SO3 sulfurous acid
D) HNO3 nitric acid
67) Which of the following compounds contains both ionic and molecular bonds?
A) sodium fluoride
B) oxygen difluoride
C) aluminum chloride
D) barium acetate
8.2 Short Answer
1) ) Indicate whether each of the following chemical formulas represents a molecular compound
or an ionic compound.
A) HC2H3O2 ________
B) Al2(SO4)3 ________
C) Ti2O3 ________
D) N4S4 ________
E) HCN ________
2) Circle the letter of the correct response in each of the following
I) A binary ionic compound
A) NO2 B) KHCO3 C) LiCl D) CO2
II) Contains 3- ion
A) Cu2O B) AlN C) BaS D) PbO2
III) Contains no ions
A) Cd S B) H2 C) CuO D) Hg2Cl2
IV) Name will not contain a Roman numeral
A) ZnCl2 B) CuCl2 C) CoCl3 D) TiCl4
V) Name contains the suffix -ous
A) HNO3 B) HF C) HIO3 D) HClO2
VI) Name contains the prefix di-
A) H2S B) Li2O C) N2O D) H2O
VII) Formula contains parentheses
A) gold(I) sulfate B) silver nitrate
C) aluminum phosphate D) beryllium hydroxide
VIII) Contains both monoatomic and polyatomic ions
A) ammonium cyanide B) lithium nitride
C) magnesium nitrate D) sulfur trioxide
IX) Contains an equal number of positive and negative ions
A) barium chloride B) lithium sulfate
C) calcium sulfide D) potassium carbonate
3) Write chemical formulas for the acids that produce each of the following ions.
A) C2O42− ________
B) PO33− ________
C) Br− ________
D) S2− ________
E) H2PO4− ________
4) Supply the missing formula or name in each of the following pairs.
A) HNO3 ________
B) ________ hydrogen chloride
C) HClO4 ________
D) ________ hypobromous acid
5) Write Name for the following chemical formulas.
A) N2O4 ________
B) Ag2SO4 ________
C) HI (g) ________
D) CaBr2 ________
E) H2SO3 ________
6) For each of the compounds on the left choose the correct name for it from the choices on the
right.
1)________ Mg3N2
2)________ N2O5
3)________ CaSO4
4)________ Cr(OH)3
7) Write the name or chemical formula for the following compounds:
A) Fe3(PO4)2 ________
B) Lead (IV) nitrate ________
C) Perchloric acid ________
D) Cl2O5 ________
8) Write chemical formulas for the following compounds.
A) nitrous acid ________
B) magnesium acetate ________
C) copper(II) sulfate ________
D) arsenic tribromide ________
E) phosphorous acid ________
F) hydrogen selenide ________