Question 1

What is interstitial solid solution?

Accepted Answer

A)  It is a material in which small atoms occupy holes in the structure of a metal without changing the original metallic structure. 
B)  It is a material formed between two metals in which atoms of one metal replace the atoms of the host metal without the change in the original structure. 
C)  It is a material with different structure than the structures of its components. 
A)  It is a material in which small atoms occupy holes in the structure of a metal without changing the original metallic structure. 
B)  It is a material formed between two metals in which atoms of one metal replace the atoms of the host metal without the change in the original structure. 
C)  It is a material with different structure than the structures of its components. A

Question 2

A solid is an insulator if:

Accepted Answer

A)  Enough electrons are present to fill a band completely and the energy gap before the next empty band is small. 
B)  Enough electrons are present to fill a band completely and the energy gap before the next empty band is equal to or less than zero. 
C)  Enough electrons are present to fill a band completely and the energy gap before the next empty band is large. 
A)  Enough electrons are present to fill a band completely and the energy gap before the next empty band is small. 
B)  Enough electrons are present to fill a band completely and the energy gap before the next empty band is equal to or less than zero. 
C)  Enough electrons are present to fill a band completely and the energy gap before the next empty band is large. A

Question 3

What are nonclose-packed structures?

Accepted Answer

A)  These structures have low space economy because the unit cells are separated for more than the length of one unit cell. 
B)  These structures have holes of larger volume than close packed structures, and therefore less efficient packing of the spheres. 
C)  These structures occur when different layers have different unit cells that cannot pack properly inside the structure. 
A)  These structures have low space economy because the unit cells are separated for more than the length of one unit cell. 
B)  These structures have holes of larger volume than close packed structures, and therefore less efficient packing of the spheres. 
C)  These structures occur when different layers have different unit cells that cannot pack properly inside the structure. B

Question 4

Find the correct statement.

Accepted Answer

A)  The radii of ions of the same charge increase across a period and decrease down a group. 
B)  If an element can form cations with different charge numbers, then for a given coordination number its ionic radius decreases with increasing charge number. 
C)  If one ion occurs in environments with different coordination numbers, then its measured radius decreases as the coordination number increases. 
A)  The radii of ions of the same charge increase across a period and decrease down a group. 
B)  If an element can form cations with different charge numbers, then for a given coordination number its ionic radius decreases with increasing charge number. 
C)  If one ion occurs in environments with different coordination numbers, then its measured radius decreases as the coordination number increases.

Question 5

Find the correct statement:

Accepted Answer

A)  Any given crystal lattice can belong to more than one crystal system because we can usually find more than one unit cell for a lattice. 
B)  One crystal system can have one and only one associated lattice type defined by the unit cell parameters. 
C)  We can find more than one unit cell for any given lattice, but the smallest, most symmetric one is considered the best choice. 
A)  Any given crystal lattice can belong to more than one crystal system because we can usually find more than one unit cell for a lattice. 
B)  One crystal system can have one and only one associated lattice type defined by the unit cell parameters. 
C)  We can find more than one unit cell for any given lattice, but the smallest, most symmetric one is considered the best choice.

Question 6

Which of the following statements correctly describes the CsCl structure type?

Accepted Answer

A)  CsCl structure is composed of primitive cubic lattice of Cl- anions with Cs+ cations occupying every cubic hole resulting in 8:8 cation : anion coordination. 
B)  CsCl structure is essentially body-centred cubic lattice with alternating Cl- and Cs+ ions resulting in 8:8 coordination. 
C)  CsCl structure is composed of hexagonal close-packing of Cl- anions with Cs+ cations occupying every octahedral hole, this arrangement of cations and anions results in a 6:6 cation : anion coordination. 
A)  CsCl structure is composed of primitive cubic lattice of Cl- anions with Cs+ cations occupying every cubic hole resulting in 8:8 cation : anion coordination. 
B)  CsCl structure is essentially body-centred cubic lattice with alternating Cl- and Cs+ ions resulting in 8:8 coordination. 
C)  CsCl structure is composed of hexagonal close-packing of Cl- anions with Cs+ cations occupying every octahedral hole, this arrangement of cations and anions results in a 6:6 cation : anion coordination.

Question 7

Where is a lattice point with fractional coordinates (0, ½, 0) located?

Accepted Answer

A)  At the centre of the edge parallel to a axis. 
B)  At the centre of the edge parallel to b axis. 
C)  At the centre of the edge parallel to c axis. 
A)  At the centre of the edge parallel to a axis. 
B)  At the centre of the edge parallel to b axis. 
C)  At the centre of the edge parallel to c axis.

Question 8

Find the correct statement.

Accepted Answer

A)  Lattice enthalpy is the standard molar enthalpy change accompanying the formation of a liquid phase from the phase. 
B)  Born-Mayer equation tells us that the lattice enthalpy decreases with decrease in interionic distance in the lattice. 
C)  Lattice enthalpy can be determined using Born-Haber cycle and available experimental thermodynamic data. 
A)  Lattice enthalpy is the standard molar enthalpy change accompanying the formation of a liquid phase from the phase. 
B)  Born-Mayer equation tells us that the lattice enthalpy decreases with decrease in interionic distance in the lattice. 
C)  Lattice enthalpy can be determined using Born-Haber cycle and available experimental thermodynamic data.

Question 9

An octahedral hole is formed by:

Accepted Answer

A)  two triangles of spheres rotated by 60F1F1F1S1F1F1F10 relative to each other and located on adjoining layers; 
B)  six spheres located across three adjoining layers of ABC pattern; 
C)  eight spheres in two squares from two AB layers rotated by 60F1F1F1S1F1F1F10 relative to each other. 
A)  two triangles of spheres rotated by 60F1F1F1S1F1F1F10 relative to each other and located on adjoining layers; 
B)  six spheres located across three adjoining layers of ABC pattern; 
C)  eight spheres in two squares from two AB layers rotated by 60F1F1F1S1F1F1F10 relative to each other.

Question 10

What is Schottky defect?

Accepted Answer

A)  It is a defect in which cation and anion swap their normal locations in the structure. 
B)  It is a point defect in which an atom or ion is missing from its normal site in the structure. 
C)  It is a defect that moves a cation or an anion from its original location in the structure into a neighbouring, otherwise unoccupied hole. 
A)  It is a defect in which cation and anion swap their normal locations in the structure. 
B)  It is a point defect in which an atom or ion is missing from its normal site in the structure. 
C)  It is a defect that moves a cation or an anion from its original location in the structure into a neighbouring, otherwise unoccupied hole.

What is interstitial solid solution?

A solid is an insulator if:

What are nonclose-packed structures?

Find the correct statement.

Find the correct statement:

Which of the following statements correctly describes the CsCl structure type?

Where is a lattice point with fractional coordinates (0, ½, 0) located?

Find the correct statement.

An octahedral hole is formed by:

What is Schottky defect?

Atomic Structure

Molecular Structure and Bonding

Molecular Symmetry

Acids and Bases

Oxidation and Reduction

An Introduction to Coordination Compounds

Physical Techniques in Inorganic Chemistry

Periodic Trends

Hydrogen

The Group 1 Elements

The Group 2 Elements

The Group 13 Elements

The Group 14 Elements

The Group 15 Elements

The Group 16 Elements

The Group 17 Elements

The Group 18 Elements

The D-Block Elements

The D-Metal Complexes: Electronic Structure and Spectra

Coordination Chemistry: Reactions of Complexes

D-Metal Organometallic Chemistry

The F-Block Metals

Materials Chemistry and Nanomaterials

Green Chemistry

Biological Inorganic Chemistry

Inorganic Chemistry in Medicine

Filters

Exam 4: The Structures of Simple Solids

What is interstitial solid solution?

A solid is an insulator if:

What are nonclose-packed structures?

Find the correct statement.

Find the correct statement:

Which of the following statements correctly describes the CsCl structure type?

Where is a lattice point with fractional coordinates (0, ½, 0) located?

Find the correct statement.

An octahedral hole is formed by:

What is Schottky defect?

Atomic Structure

Molecular Structure and Bonding

Molecular Symmetry

Acids and Bases

Oxidation and Reduction

An Introduction to Coordination Compounds

Physical Techniques in Inorganic Chemistry

Periodic Trends

Hydrogen

The Group 1 Elements

The Group 2 Elements

The Group 13 Elements

The Group 14 Elements

The Group 15 Elements

The Group 16 Elements

The Group 17 Elements

The Group 18 Elements

The D-Block Elements

The D-Metal Complexes: Electronic Structure and Spectra

Coordination Chemistry: Reactions of Complexes

D-Metal Organometallic Chemistry

The F-Block Metals

Materials Chemistry and Nanomaterials

Green Chemistry

Biological Inorganic Chemistry

Inorganic Chemistry in Medicine

Filters