AIPMT MAIN2008Chemistry-Solid State
AIPMT MAIN 2008 Chemistry Crystal Lattices and Unit Cells MCQ Question
Type: MCQ-conceptual-Medium
Which of the following statements is not correct?
A
The number of Bravais lattices in which a crystal can be categorized is 14
B
The fraction of the total volume occupied by the atoms in a primitive cell is 0.48
C
Molecular solids are generally volatile
D
The number of carbon atoms in an unit cell of diamond is 4
Correct Answer
Option D
Detailed Explanation
Diamond has a ZnS type structure. The number of atoms in a unit cell of diamond is 8, not 4. Additionally, option B is also incorrect as the fraction of the total volume occupied by the atoms in a cubic primitive cell is 0.524.
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