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Crystal Form Shows this Structure mcq. We covered all the Crystal Form Shows this Structure mcq in this post for free so that you can practice well for the exam.
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Crystal Form Shows this Structure Objective mcq for Students
How many tetrahedral voids are present in one face-centered cubic (FCC) unit cell?
a) 6
b) 8
c) 10
d) 12
Option b – 8
The interatomic distances for C–C and Si–C bonds are 154 pm and 188 pm respectively. What is the atomic radius of silicon?
a) 77 pm
b) 94 pm
c) 114 pm
d) 111 pm
Option d – 111 pm
If a close-packed arrangement contains N atoms, what are the numbers of tetrahedral and octahedral voids respectively?
a) N and 2N
b) 2N and N
c) N and N
d) 2N and 2N
Option b – 2N and N
Elements A and B form a cubic crystal in which A atoms occupy the cube corners and B atoms are located at the body center. What is the empirical formula of the compound?
a) A₂B₃
b) AB
c) AB₂
d) A₂B
Option b – AB
What percentage of the total volume is occupied by atoms in a face-centered cubic lattice?
a) 74%
b) 68%
c) 52.4%
d) 60%
Option a – 74%
A metal oxide crystallizes in a hexagonal close-packed structure where metal ions occupy two-thirds of the octahedral voids. What is the formula of the oxide?
a) M₂O₃
b) MO₂
c) M₂O
d) MO
Option a – M₂O₃
Aluminium has a cubic close-packed structure with an atomic radius of 125 pm. What is the edge length of its unit cell?
a) 250 pm
b) 216.5 pm
c) 176 pm
d) 353.5 pm
Option d – 353.5 pm
The ionic radii of Cs⁺ and Cl⁻ ions are 1.69 Å and 1.81 Å respectively. What is the edge length of the corresponding unit cell?
a) 4.512 Å
b) 3.50 Å
c) 4.04 Å
d) 7.00 Å
Option c – 4.04 Å
In a cubic close-packed structure, what is the ratio of close-packed atoms to tetrahedral voids?
a) 1 : 1
b) 2 : 1
c) 1 : 3
d) 1 : 2
Option d – 1 : 2
Which of the following Metals crystallizes in a body-centered cubic structure?
a) Magnesium
b) Zinc
c) Copper
d) Sodium
Option d – Sodium
What is the coordination number of atoms in a body-centered cubic lattice?
a) 8
b) 12
c) 4
d) 6
Option a – 8
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