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WorksheetsSolid State Chemistry
Total questions: 20
Worksheet time: 20mins
What type of material is this one?
Crystal
Amorphous
Covalent Crystal
Ionic Crystal
How do we call the macroscopic structure of a crystalline solid?
Crystal Structure
Lattice
Unit Cell
Is NOT a crystal system
Cubic
Hexagonal
Rotorombic
Monoclinic
Is the most common crystal system for metals
Tetragonal
Trigonal
Monoclinic
Cubic
How many complete atoms can we find on the BCC (body centered cubic) structure?
1
2
3
4
Obtain the volume of the BCC crystal structure in term of it the atomic radius.
2R3
16R3√2
(4R/√3)3
(4R)3
Molybdenum (Mo) has a BCC crystal structure, an atomic radius of 0.1363 nm. Compute its theoretical volume.
3.1187x10-23 cm3
1.5594x10-23 cm3
3.1187x10-23 m3
1.5594x10-23 m3
Molybdenum (Mo) has a BCC crystal structure, an atomic radius of 0.1363 nm, and an atomic
weight of 95.94 g/mol. Compute its theoretical density.
5.1083 g/cm3
10.2165 g/cm3
20.4331 g/cm3
10.2165 kg/m3
What is the coordination number in the FCC structure?
24
12
8
4
Find the coordinates, e.g. (0 0 0), for point 4.
(0 1 0)
(1 1 0)
(0 1 1)
(0 0 0)
Find the direction, e.g. [0 0 0], from point 2 to point 8
[0 0 0]
[1 0 0]
[1 1 0]
[1 1 1]
What are the miller indices, e.g. (0 0 0), for plane 1?
(0 0 0)
(1 1 1)
(1/2 1 1)
(1 2 2)
What are the miller indices, e.g. (0 0 0), for plane 2?
(0 0 0)
(1 0 0)
(0 1 0)
(0 0 1)
What is the condition to have constructive interference?
nλ = SQ + TQ
nλ = PS + PT
nλ = PQ
nλ = AA' + BB'
Which of the following statements about crystals is incorrect?
The shape of a crystal is dependent on the chemical conditions under which it formed
There are seven large groups of crystal geometries or crystal systems.
There are many geometric planes in a single crystal.
The atomic structure of a crystal defines it's geometric shape.
The shape of a crystal is independent of the physical conditions under which it formed.
What is the main information provided by the spacing of peaks in a diffractogram?
The elements present in the sample crystals.
Which crystal group the sample belongs to.
The number of crystals in the sample.
The number of X-rays absorbed by the sample.
All of the above.
Which of the following statements is incorrect? Powder x-ray diffraction (XRD) uses x-rays to
measure the crystalline content of materials
image the surface topography of crystalline materials
identify the crystalline phases present in materials
determine the spacing between the lattice planes of crystalline materials
How is a diffractogram (a common way to display output from X-ray diffraction) presented?
The X-axis shows the angle and the Y-axis shows the diffracted X-ray intensity.
The X-axis shows the angle and the Y-axis shows the source X-ray intensity.
The X-axis shows the diffracted X-ray intensity and the Y-axis shows the angle.
The X-axis shows the source X-ray intensity and the Y-axis shows the angle.
Polymorphs are different crystalline structures
formed by the interaction of x-rays with the electrons of the sample.
with the same arrangement of their atoms in 3D space.
from the same crystal group.
having the same chemical formula.
What compound does this XRD correspond?
NaCl Cubic
Anatase (TiO2) Orthorrombic
YBa2Cu4O8 Triclinic
