Question 1

Ionic solids are held together with __________ interactions.

Accepted Answer

The answer of Ionic solids are held together with __________...

Question 2

Use the Born Lande equation to calculate the lattice energy of MgO given that r = 210.5 pm.

Accepted Answer

A)  7914 kJ mol-1 
B)  3957 kJ mol-1 
C)  4617 kJ mol-1 
D)  989 kJ mol-1 
A)  7914 kJ mol-1 
B)  3957 kJ mol-1 
C)  4617 kJ mol-1 
D)  989 kJ mol-1

Question 3

Use the Kapustinskii equation to estimate the lattice enthalpy for KBr given that the ionic radii are 138 and 196 pm for K+ and Br- respectively.

Accepted Answer

A)  646 kJ mol-1 
B)  323 kJ mol-1 
C)  2584 kJ mol-1 
D)  46 kJ mol-1 
A)  646 kJ mol-1 
B)  323 kJ mol-1 
C)  2584 kJ mol-1 
D)  46 kJ mol-1

Question 4

The structure of the perovskite (calcium titanate) is given below. What is the coordination number of the two cations? Please select all that apply.

Accepted Answer

A)  Ca is 12 coordinate 
B)  Ti is 12 coordinate 
C)  Ti is 6 coordinate 
D)  Ca is 6 coordinate 
A)  Ca is 12 coordinate 
B)  Ti is 12 coordinate 
C)  Ti is 6 coordinate 
D)  Ca is 6 coordinate

Question 5

Match the material with the bonding type.
-SrF2

Accepted Answer

A)  metallic 
B)  molecular 
C)  covalent 
D)  ionic 
A)  metallic 
B)  molecular 
C)  covalent 
D)  ionic

Question 6

Match the value of Born exponent with the appropriate compound. given that the Born exponent values for the individual ions are BeS1U1P12+S1S1P0 = 5, FS1U1P1-S1S1P0 = 7, ZnS1U1P12+S1S1P0, SS1U1P12-S1S1P0 and ClS1U1P1-S1S1P0 = 9, RbS1U1P1+S1S1P0 = 10, CsS1U1P1+S1S1P0 = 12 respectively.
-BeF2

Accepted Answer

A)  9.0 
B)  10.5 
C)  6.33 
D)  9.5 
A)  9.0 
B)  10.5 
C)  6.33 
D)  9.5

Question 7

Magnesium oxide crystallizes with the sodium chloride structure. Magnesium oxide obeys the radius ratio rule for this structure.

Accepted Answer

A) True 
 B)False

Question 8

There is no structural analogue of CaF2 in hexagonal close packing (fill all tetrahedral holes).

Accepted Answer

A) True 
 B)False

Question 9

Use the following data to construct a thermochemical cycle for the formation of ZnS from its elements and use the cycle to calculate the enthalpy of formation of ZnS.
Zn (s) F1F1F1S1F1F1F10 Zn (g) 130 kJ mol-1
Zn (g) F1F1F1S1F1F1F10 Zn+ (g) 906 kJ mol-1
Zn+ (g) F1F1F1S1F1F1F10 Zn2+ (g) 1733 kJ mol-1
ZnS (s) F1F1F1S1F1F1F10 Zn2+ (g) + S2- (g) 3048 kJ mol-1
S (s) F1F1F1S1F1F1F10 S (g) 233 kJ mol-1
S (s) F1F1F1S1F1F1F10 S- (g) -200 kJ mol-1
S- (s) F1F1F1S1F1F1F10 S2- (g) 456 kJ mol-1

Accepted Answer

A)  200 kJ mol-1 
B)  -200 kJ mol-1 
C)  33 kJ mol-1 
D)  2848 kJ mol-1 
A)  200 kJ mol-1 
B)  -200 kJ mol-1 
C)  33 kJ mol-1 
D)  2848 kJ mol-1

Question 10

Match the value of Born exponent with the appropriate compound. given that the Born exponent values for the individual ions are BeS1U1P12+S1S1P0 = 5, FS1U1P1-S1S1P0 = 7, ZnS1U1P12+S1S1P0, SS1U1P12-S1S1P0 and ClS1U1P1-S1S1P0 = 9, RbS1U1P1+S1S1P0 = 10, CsS1U1P1+S1S1P0 = 12 respectively.
-CsCl

Accepted Answer

A)  9.0 
B)  10.5 
C)  6.33 
D)  9.5 
A)  9.0 
B)  10.5 
C)  6.33 
D)  9.5

Question 11

Match the material with the bonding type.
-N2O

Accepted Answer

A)  metallic 
B)  molecular 
C)  covalent 
D)  ionic 
A)  metallic 
B)  molecular 
C)  covalent 
D)  ionic

Ionic solids are held together with __________ interactions.

Use the Born Lande equation to calculate the lattice energy of MgO given that r = 210.5 pm.

Use the Kapustinskii equation to estimate the lattice enthalpy for KBr given that the ionic radii are 138 and 196 pm for K⁺ and Br^- respectively.

The structure of the perovskite (calcium titanate) is given below. What is the coordination number of the two cations? Please select all that apply.

Match the material with the bonding type. -SrF₂

Match the value of Born exponent with the appropriate compound. given that the Born exponent values for the individual ions are Be²⁺ = 5, F^- = 7, Zn²⁺, S^2- and Cl^- = 9, Rb⁺ = 10, Cs⁺ = 12 respectively. -BeF₂

Magnesium oxide crystallizes with the sodium chloride structure. Magnesium oxide obeys the radius ratio rule for this structure.

There is no structural analogue of CaF₂ in hexagonal close packing (fill all tetrahedral holes).

Match the value of Born exponent with the appropriate compound. given that the Born exponent values for the individual ions are Be²⁺ = 5, F^- = 7, Zn²⁺, S^2- and Cl^- = 9, Rb⁺ = 10, Cs⁺ = 12 respectively. -CsCl

Match the material with the bonding type. -N₂O

Fundamentals

The Language of Organic Chemistry

Atomic Structure and Properties

Diatomic Molecules

Polyatomic Molecules

Acids and Bases

Gases

Reaction Kinetics

Molecular Spectroscopy

Analytical Chemistry

Molecular Characterisation

Energy and Thermochemistry

Entropy and Gibbs Energy

Electrochemistry

Phase Equilibrium and Solutions

Isomerism and Stereochemistry

Organic Reaction Mechanisms

Halogenoalkanes: Substitution and Elimination Reactions

Alkenes and Alkynes: Electrophilic Addition and Pericyclic Reactions

Benzene and Other Aromatic Compounds: Electrophilic Substitution Reactions

Aldehydes and Ketones: Nucleophilic Addition and Α-Substitution Reactions

Carboxylic Acids and Derivatives: Nucleophilic Acyl Substitution and Α-Substitution Reactions

Hydrogen

S-Block Chemistry

P-Block Chemistry

D-Block Chemistry

Filters

Exam 6: Solids

Ionic solids are held together with __________ interactions.

Use the Born Lande equation to calculate the lattice energy of MgO given that r = 210.5 pm.

Use the Kapustinskii equation to estimate the lattice enthalpy for KBr given that the ionic radii are 138 and 196 pm for K+ and Br- respectively.

The structure of the perovskite (calcium titanate) is given below. What is the coordination number of the two cations? Please select all that apply.

Match the material with the bonding type. -SrF2

Match the value of Born exponent with the appropriate compound. given that the Born exponent values for the individual ions are Be2+ = 5, F- = 7, Zn2+, S2- and Cl- = 9, Rb+ = 10, Cs+ = 12 respectively. -BeF2

Magnesium oxide crystallizes with the sodium chloride structure. Magnesium oxide obeys the radius ratio rule for this structure.

There is no structural analogue of CaF2 in hexagonal close packing (fill all tetrahedral holes).

Match the value of Born exponent with the appropriate compound. given that the Born exponent values for the individual ions are Be2+ = 5, F- = 7, Zn2+, S2- and Cl- = 9, Rb+ = 10, Cs+ = 12 respectively. -CsCl

Match the material with the bonding type. -N2O

Fundamentals

The Language of Organic Chemistry

Atomic Structure and Properties

Diatomic Molecules

Polyatomic Molecules

Acids and Bases

Gases

Reaction Kinetics

Molecular Spectroscopy

Analytical Chemistry

Molecular Characterisation

Energy and Thermochemistry

Entropy and Gibbs Energy

Electrochemistry

Phase Equilibrium and Solutions

Isomerism and Stereochemistry

Organic Reaction Mechanisms

Halogenoalkanes: Substitution and Elimination Reactions

Alkenes and Alkynes: Electrophilic Addition and Pericyclic Reactions

Benzene and Other Aromatic Compounds: Electrophilic Substitution Reactions

Aldehydes and Ketones: Nucleophilic Addition and Α-Substitution Reactions

Carboxylic Acids and Derivatives: Nucleophilic Acyl Substitution and Α-Substitution Reactions

Hydrogen

S-Block Chemistry

P-Block Chemistry

D-Block Chemistry

Filters

Use the Kapustinskii equation to estimate the lattice enthalpy for KBr given that the ionic radii are 138 and 196 pm for K⁺ and Br^- respectively.

Match the material with the bonding type. -SrF₂

Match the value of Born exponent with the appropriate compound. given that the Born exponent values for the individual ions are Be²⁺ = 5, F^- = 7, Zn²⁺, S^2- and Cl^- = 9, Rb⁺ = 10, Cs⁺ = 12 respectively. -BeF₂

There is no structural analogue of CaF₂ in hexagonal close packing (fill all tetrahedral holes).

Match the value of Born exponent with the appropriate compound. given that the Born exponent values for the individual ions are Be²⁺ = 5, F^- = 7, Zn²⁺, S^2- and Cl^- = 9, Rb⁺ = 10, Cs⁺ = 12 respectively. -CsCl

Match the material with the bonding type. -N₂O