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




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PROBLEM \(\PageIndex2\)

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 \(\PageIndex3\)

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, \(\ceNH4+\), \(\ceCO3^2-\)

Answer d

ionic, Sr2+, \(\ceH2PO4-\)

Answer e

covalent

Answer f

ionic, Na+, O2−


PROBLEM \(\PageIndex4\)

For each of the following pairs of ions, write the symbol for the formula of the compound they will form:

(a) Ca2+, S2−(b) \(\ceNH4+\), \(\ceSO4^2-\)(c) Al3+, Br−(d) Na+, \(\ceHPO4^2-\)(e) Mg2+, \(\cePO4^3-\)

Answer a

CaS

Answer b

(NH4)2CO3

Answer c

AlBr3

Answer d

Na2HPO4

Answer e

Mg3(PO4)2


PROBLEM \(\PageIndex5\)

For each of the following pairs of ions, write the symbol for the formula of the compound they will form:

(a) K+, O2−(b) \(\ceNH4+\), \(\cePO4^3-\)(c) Al3+, O2−(d) Na+, \(\ceCO3^2-\)(e) Ba2+, \(\cePO4^3-\)

Answer a

K2O

Answer b

(NH4)3PO4

Answer c

Al2O3

Answer d

Na2CO3

Answer e

Ba3(PO4)2

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PROBLEM \(\PageIndex6\)

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 \(\PageIndex7\)

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 \(\PageIndex8\)

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 \(\PageIndex9\)

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 \(\PageIndex10\)

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 \(\PageIndex11\)

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 \(\PageIndex12\)

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 \(\PageIndex13\)

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 \(\PageIndex14\)

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 \(\PageIndex15\)

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




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