Question 1

Vanadium crystallizes in a body centered cubic structure.If the edge length of the unit cell is 301 pm,what is the radius?

Accepted Answer

A)   238 pm
B)   301 pm
C)   130 pm
D)   89.0 pm
E)   157 pm

Question 2

Which of the following substances should have the highest melting point?

Accepted Answer

A)   CO2
B)   SrS
C)   Kr
D)   F2
E)   MgO

Question 3

Cesium has a radius of 272 pm and crystallizes in a body-centered cubic structure.What is the edge length of the unit cell?

Accepted Answer

A)   314 pm
B)   385 pm
C)   544 pm
D)   628 pm

Question 4

Give the coordination number for a body-centered cubic cell.

Accepted Answer

A)   0
B)   6
C)   8
D)   10
E)   12

Question 5

Identify the type of solid for argon.

Accepted Answer

A)   metallic atomic solid
B)   ionic solid
C)   nonbonding atomic solid
D)   molecular solid
E)   networking atomic solid

Question 6

When an X-ray beam strikes the surface of a crystal with a lattice spacing of 145 nm,it produces a maximum reflection at an angle of 41.0°.What is the wavelength of the X-ray with a value of n=1?

Accepted Answer

A)   130°
B)   164°
C)   158°
D)   190°
E)   167° D

Question 7

Nickel has a face-centered cubic structure and has a density of 8.90 g/cm3.What is its atomic radius?

Accepted Answer

A)   125 pm
B)   249 pm
C)   353 pm
D)   997 pm

Question 8

Which of the following is considered an ionic solid?

Accepted Answer

A)   (NH4) 2CO3
B)   CBr4
C)   SeBr2
D)   XeF4
E)   None of these is an ionic solid.

Question 9

Lithium crystallizes in a body-centered cubic structure.What is the coordination number of each atom?

Accepted Answer

A)   4
B)   6
C)   8
D)   12

Question 10

Diamond crystallizes in a cubic lattice with an edge length of 357 pm.If there are a total of 8 carbon atoms in the unit cell,what is the density of diamond?

Accepted Answer

A)   12.9 g/cm3
B)   3.54 g/cm3
C)   8.26 g/cm3
D)   2.26 g/cm3
E)   6.20 g/cm3

Question 11

Which of the following represent the addition polymer formed from the compound below?
CH2=CH-CH3

Accepted Answer

A)   2=CH-CH3 
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Question 12

Determine the radius of an Al atom (in pm) if the density of aluminum is 2.71 g/cm3.Aluminum crystallizes in a face centered cubic structure with an edge length of 2 3.Aluminum crystallizes in a face centered cubic structure with an edge length of 2   r. A)  143 pm B)  227 pm C)  96 pm D)  172 pm E)  193 pm" class="answers-bank-image d-inline" rel="preload" > r.

Accepted Answer

A)   143 pm
B)   227 pm
C)   96 pm
D)   172 pm
E)   193 pm

Question 13

Which of the following forms an ionic solid?

Accepted Answer

A)   Ag
B)   C7H15NH2
C)   Rb I 
D)   S O3

Question 14

What is the edge length of a face-centered cubic unit cell made up of atoms having a radius of 128 pm?

Accepted Answer

A)   181 pm
B)   362 pm
C)   512 pm
D)   1020 pm

Question 15

Identify the type of solid for ice.

Accepted Answer

A)   metallic atomic solid
B)   ionic solid
C)   nonbonding atomic solid
D)   molecular solid
E)   networking atomic solid D

Question 16

Identify the type of solid for AgCl.

Accepted Answer

A)   metallic atomic solid
B)   ionic solid
C)   nonbonding atomic solid
D)   molecular solid
E)   networking atomic solid

Question 17

Which of the following is considered an atomic solid?

Accepted Answer

A)   F2
B)   CsBr
C)   N2
D)   Nb
E)   None of these is an atomic solid.

Question 18

Vanadium crystallizes in a body centered cubic structure and has an atomic radius of 131 pm.Determine the density of vanadium,if the edge length of a bcc structure is 4r/ 3 B)  12.2 g/cm3 C)  6.11 g/cm3 D)  2.77 g/cm3 E)  8.46 g/cm3" class="answers-bank-image d-inline" rel="preload" > .

Accepted Answer

A)   3.06 g/cm3
B)   12.2 g/cm3
C)   6.11 g/cm3
D)   2.77 g/cm3
E)   8.46 g/cm3

Question 19

When an X-ray beam with a wavelength of 180 pm strikes the surface of a crystal,it produces a maximum reflection at an angle of 54.0°.If n=1,what is the separation between layers of atoms in the crystal?

Accepted Answer

A)   151 nm
B)   38.9 mm
C)   111 nm
D)   55.3 nm
E)   83.5 nm

Question 20

Which of the following is an example of a polymer?

Accepted Answer

A)   polyvinyl chloride
B)   polystyrene
C)   nylon
D)   polyurethane
E)   all of the above E

Exam 13: Crystalline Solids and Modern Materials

Vanadium crystallizes in a body centered cubic structure.If the edge length of the unit cell is 301 pm,what is the radius?

Correct AnswerverifiedShow Answer

Which of the following substances should have the highest melting point?

Correct AnswerverifiedShow Answer

Cesium has a radius of 272 pm and crystallizes in a body-centered cubic structure.What is the edge length of the unit cell?

Correct AnswerverifiedShow Answer

Give the coordination number for a body-centered cubic cell.

Correct AnswerverifiedShow Answer

Identify the type of solid for argon.

Correct AnswerverifiedShow Answer

When an X-ray beam strikes the surface of a crystal with a lattice spacing of 145 nm,it produces a maximum reflection at an angle of 41.0°.What is the wavelength of the X-ray with a value of n=1?

Correct AnswerverifiedD

Nickel has a face-centered cubic structure and has a density of 8.90 g/cm3.What is its atomic radius?

Correct AnswerverifiedShow Answer

Which of the following is considered an ionic solid?

Correct AnswerverifiedShow Answer

Lithium crystallizes in a body-centered cubic structure.What is the coordination number of each atom?

Correct AnswerverifiedShow Answer

Diamond crystallizes in a cubic lattice with an edge length of 357 pm.If there are a total of 8 carbon atoms in the unit cell,what is the density of diamond?

Correct AnswerverifiedShow Answer

Which of the following represent the addition polymer formed from the compound below? CH2=CH-CH3

Correct AnswerverifiedShow Answer

Determine the radius of an Al atom (in pm) if the density of aluminum is 2.71 g/cm3.Aluminum crystallizes in a face centered cubic structure with an edge length of 2 r.

Correct AnswerverifiedShow Answer

Which of the following forms an ionic solid?

Correct AnswerverifiedShow Answer

What is the edge length of a face-centered cubic unit cell made up of atoms having a radius of 128 pm?

Correct AnswerverifiedShow Answer

Identify the type of solid for ice.

Correct AnswerverifiedD

Identify the type of solid for AgCl.

Correct AnswerverifiedShow Answer

Which of the following is considered an atomic solid?

Correct AnswerverifiedShow Answer

Vanadium crystallizes in a body centered cubic structure and has an atomic radius of 131 pm.Determine the density of vanadium,if the edge length of a bcc structure is 4r/ .

Correct AnswerverifiedShow Answer

When an X-ray beam with a wavelength of 180 pm strikes the surface of a crystal,it produces a maximum reflection at an angle of 54.0°.If n=1,what is the separation between layers of atoms in the crystal?

Correct AnswerverifiedShow Answer

Which of the following is an example of a polymer?

Correct AnswerverifiedE

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D

Nickel has a face-centered cubic structure and has a density of 8.90 g/cm³.What is its atomic radius?

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Which of the following represent the addition polymer formed from the compound below? CH₂=CH-CH₃

Correct Answer
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Determine the radius of an Al atom (in pm) if the density of aluminum is 2.71 g/cm³.Aluminum crystallizes in a face centered cubic structure with an edge length of 2 r.

Correct Answer
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D

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E