WorksheetsQuiz on Unit Cells
Total questions: 22
Worksheet time: 31mins
The number of nearest particles which is in direct contact with a particle in a closed packed structure
Unit Cell
Void
Packing efficiency
Coordination number
Smallest repeating unit of crystal lattice
Lattice site
Unit cell
Crystal lattice
Lattice point
The edge length of a face centered cubic cell of an ionic substance is 508 pm. If the radius of the cation is 110 pm, the radius of the anion is
144
288
396
408
Lithium forms body centred cubic structure. The length of the side of its unit cell is 351 pm. Atomic radius of the lithium will be:-
160
152
204
180
Copper crystallises in fcc lattice with a unit cell edge of 361 pm. The radius of copper atom is:-
120
128
138
115
A solid X+ Y- has a bcc structure . If the distance of closest approach between the two ions is 173 pm, the edge length of the cell is :
200 pm
142.2 pm
Under root 2 pm
178 pm
Which crystal structure does the picture show?
BBC (British Broadcasting Company)
FCC (Face-Centered Cubic)
SC (Simple Cubic)
BCC (Body Center Cubic)
Which crystal structure does the picture show?
BBC (British Broadcasting Company)
BCC (Body Center Cubic)
SC (Simple Cubic)
FCC (Face-Centered Cubic)
what is the percentage of emptiness in the Body Centered Cubic form?
48%
32%
26%
56%
What is the percentage of emptiness in the Body Center Cubic form?
70%
50%
32%
63%
What is the percentage of emptiness in the Face Centered Cubic form?
43%
29%
15%
26%
Which crystal structure does the picture show?
FCC (Face Center Cubic)
BCC ( Body Center Cubic)
BBC (British Broadcasting Company)
SC (Simple Cubic)
Give number of atom/s in FCC.
2
4
6
8
What is the small repeating entity of the atom structure?
Crystal lattice
Unit cell
Crystal structure
Shape
Identify the unit cell above.
Body Cebtered Cubic
Simple Cubic
Face Centered Cubic
Hexagonal Closed Pack
A sample containing aluminum weighs 27.0 g and has a volume of 10.0 cm 3 . The atomic radius of metallic aluminum has been determined by x-ray diffraction to be 0.143 nm. There are 6.02 x 10 23 total atoms in the piece of metal. What is the volume occupied by aluminum in cm3?
1.22 x 10-23
7.37
2.63
73.7
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
What is the coordination number in the FCC structure?
1
12
6
4
