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PROBLEM \(\PageIndex{1}\)
Using the periodic table, predict whether the following chlorides are ionic or covalent: KCl, NCl3, ICl, MgCl2, PCl5, and CCl4.
- Answer
-
Ionic: KCl, MgCl2; Covalent: NCl3, ICl, PCl5, CCl4
PROBLEM \(\PageIndex{2}\)
Using the periodic table, predict whether the following chlorides are ionic or covalent: SiCl4, PCl3, CaCl2, CsCl, CuCl2, and CrCl3.
- Answer
-
Ionic: CaCl2, CuCl2, CsCl, CrCl3; Covalent: SiCl4, PCl3
PROBLEM \(\PageIndex{3}\)
For each of the following compounds, state whether it is ionic or covalent. If it is ionic, write the symbols for the ions involved:
(a) NF3
(b) BaO
(c) (NH4)2CO3
(d) Sr(H2PO4)2
(e) IBr
(f) Na2O
- Answer a
-
covalent
- Answer b
-
ionic, Ba2+, O2−
- Answer c
-
ionic, \(\ce{NH4+}\), \(\ce{CO3^2-}\)
- Answer d
-
ionic, Sr2+, \(\ce{H2PO4-}\)
- Answer e
-
covalent
- Answer f
-
ionic, Na+, O2−
PROBLEM \(\PageIndex{4}\)
For each of the following pairs of ions, write the symbol for the formula of the compound they will form:
(a) Ca2+, S2−
(b) \(\ce{NH4+}\), \(\ce{SO4^2-}\)
(c) Al3+, Br−
(d) Na+, \(\ce{HPO4^2-}\)
(e) Mg2+, \(\ce{PO4^3-}\)
- Answer a
-
CaS
- Answer b
-
(NH4)2CO3
- Answer c
-
AlBr3
- Answer d
-
Na2HPO4
- Answer e
-
Mg3(PO4)2
PROBLEM \(\PageIndex{5}\)
For each of the following pairs of ions, write the symbol for the formula of the compound they will form:
(a) K+, O2−
(b) \(\ce{NH4+}\), \(\ce{PO4^3-}\)
(c) Al3+, O2−
(d) Na+, \(\ce{CO3^2-}\)
(e) Ba2+, \(\ce{PO4^3-}\)
- Answer a
-
K2O
- Answer b
-
(NH4)3PO4
- Answer c
-
Al2O3
- Answer d
-
Na2CO3
- Answer e
-
Ba3(PO4)2
- Click here for a video of the solution
-
PROBLEM \(\PageIndex{6}\)
Name the following compounds:
(a) CsCl
(b) BaO
(c) K2S
(d) BeCl2
(e) HBr
(f) AlF3
- Answer a
-
cesium chloride
- Answer b
-
barium oxide
- Answer c
-
potassium sulfide
- Answer d
-
beryllium chloride
- Answer e
-
hydrogen bromide
- Answer f
-
aluminum fluoride
PROBLEM \(\PageIndex{7}\)
Name the following compounds:
(a) NaF
(b) Rb2O
(c) BCl3
(d) H2Se
(e) P4O6
(f) ICl3
- Answer a
-
sodium fluoride
- Answer b
-
Rubidium oxide
- Answer c
-
boron trichloride
- Answer d
-
hydrogen selenide
- Answer e
-
tetraphosphorous hexaoxide
(if you are googling the answers to your homework, google may disagree with you. But we are naming based on the rules we just learned, which is why you shouldn't trust google for the answers to your homework)
- Answer f
-
Iodine trichloride
PROBLEM \(\PageIndex{8}\)
Write the formulas of the following compounds:
(a) rubidium bromide
(b) magnesium selenide
(c) sodium oxide
(d) calcium chloride
(e) hydrogen fluoride
(f) gallium phosphide
(g) aluminum bromide
(h) ammonium sulfate
- Answer a
-
RbBr
- Answer b
-
MgSe
- Answer c
-
Na2O
- Answer d
-
CaCl2
- Answer e
-
HF
- Answer f
-
GaP
- Answer g
-
AlBr3
- Answer h
-
(NH4)2SO4
PROBLEM \(\PageIndex{9}\)
Write the formulas of the following compounds:
(a) lithium carbonate
(b) sodium perchlorate
(c) barium hydroxide
(d) ammonium carbonate
(e) sulfuric acid
(f) calcium acetate
(g) magnesium phosphate
(h) sodium sulfite
- Answer a
-
Li2CO3
- Answer b
-
NaClO4
- Answer c
-
Ba(OH)2
- Answer d
-
(NH4)2CO3
- Answer e
-
H2SO4
- Answer f
-
Ca(C2H3O2)2
- Answer g
-
Mg3(PO4)2
- Answer h
-
Na2SO3
PROBLEM \(\PageIndex{10}\)
Write the formulas of the following compounds:
(a) chlorine dioxide
(b) dinitrogen tetraoxide
(c) potassium phosphide
(d) silver(I) sulfide
(e) aluminum nitride
(f) silicon dioxide
- Answer a
-
ClO2
- Answer b
-
N2O4
- Answer c
-
K3P
- Answer d
-
Ag2S
- Answer e
-
AlN
- Answer f
-
SiO2
PROBLEM \(\PageIndex{11}\)
Write the formulas of the following compounds:
(a) barium chloride
(b) magnesium nitride
(c) sulfur dioxide
(d) nitrogen trichloride
(e) dinitrogen trioxide
(f) tin(IV) chloride
- Answer a
-
BaCl2
- Answer b
-
Mg3N2
- Answer c
-
SO2
- Answer d
-
NCl3
- Answer e
-
N2O3
- Answer f
-
SnCl4
PROBLEM \(\PageIndex{12}\)
Each of the following compounds contains a metal that can exhibit more than one ionic charge. Name these compounds:
(a) Cr2O3
(b) FeCl2
(c) CrO3
(d) TiCl4
(e) CoO
(f) MoS2
- Answer a
-
chromium(III) oxide
- Answer b
-
iron(II) chloride
- Answer c
-
chromium(VI) oxide
- Answer d
-
titanium(IV) chloride
- Answer e
-
cobalt(II) oxide
- Answer f
-
molybdenum(IV) sulfide
PROBLEM \(\PageIndex{13}\)
Each of the following compounds contains a metal that can exhibit more than one ionic charge. Name these compounds:
(a) NiCO3
(b) MoO3
(c) Co(NO3)2
(d) V2O5
(e) MnO2
(f) Fe2O3
- Answer a
-
nickel (II) carbonate
- Answer b
-
Molybdenum (VI) oxide
- Answer c
-
cobalt (II) nitrate
- Answer d
-
vanadium (V) oxide
- Answer e
-
manganese (IV) oxide
- Answer f
-
iron (III) oxide
PROBLEM \(\PageIndex{14}\)
The following ionic compounds are found in common household products. Write the formulas for each compound:
(a) potassium phosphate
(b) copper(II) sulfate
(c) calcium chloride
(d) titanium dioxide
(e) ammonium nitrate
(f) sodium bisulfate (the common name for sodium hydrogen sulfate)
- Answer a
-
K3PO4
- Answer b
-
CuSO4
- Answer c
-
CaCl2
- Answer d
-
TiO2
- Answer e
-
NH4NO3
- Answer f
-
NaHSO4
PROBLEM \(\PageIndex{15}\)
The following ionic compounds are found in common household products. Name each of the compounds:
(a) Ca(H2PO4)2
(b) FeSO4
(c) CaCO3
(d) MgO
(e) NaNO2
(f) KI
- Answer a
-
calcium dihydrogen phosphate
- Answer b
-
iron (II) sulfate
- Answer c
-
calcium carbonate
- Answer d
-
magnesium oxide
- Answer e
-
sodium nitrite
- Answer f
-
potassium iodide
Contributors
Paul Flowers (University of North Carolina - Pembroke),Klaus Theopold (University of Delaware) andRichard Langley (Stephen F. Austin State University) with contributing authors.Textbook content produced by OpenStax College is licensed under a Creative Commons Attribution License 4.0 license. Download for free at http://cnx.org/contents/85abf193-2bd...a7ac8df6@9.110).
- Adelaide Clark, Oregon Institute of Technology
