Solved: Ionic Bonding (Section)(a) Does the lattice energy

Chapter , Problem 24E

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Problem 24E

Ionic Bonding (Section)

(a) Does the lattice energy of an ionic solid increase or decrease

(i) as the charges of the ions increase, (ii) as the sizes of the ions increase?

(b) Arrange the following substances not listed in Table according to their expected lattice energies, listing them from lowest lattice energy to the highest: MgS, KI, GaN, LiBr.

Table Lattice Energies for Some Ionic Compounds

Compound

Lattice Energy (kJ/mol)

Compound

Lattice Energy (kJ/mol)

LiF

1030

MgCl2

2326

LiCl

834

SrCl2

2127

LiI

730

NaF

910

MgO

3795

NaCl

788

CaO

3414

NaBr

732

SrO

3217

NaI

682

KF

808

ScN

7547

KCl

701

KBr

671

CsCl

657

CsI

600

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