NEET 2008
- Exam
- NEET
- Year
- 2008
- Subject
- Chemistry
- Chapter
- Solid State
NEET 2008 · Chemistry · Solid State
Which of the following statements is not correct?
Which of the following statements is not correct?
Options
- AThe number of Bravais lattices in which a crystal can be categorized is 14
- BThe fraction of the total volume occupied by the atoms in a primitive cell is 0.48
- CMolecular solids are generally volatile
- DThe number of carbon atoms in an unit cell of diamond is 4
Correct answer
D. The number of carbon atoms in an unit cell of diamond is 4
Step-by-step solution
Diamond has ZnS type structure. So, no. of atoms in a unit cell of diamond is 8 .
Note : But option (2)
is also incorrect because the fraction of the total volume occupied by the atoms in a cubic primitive cells is 0.524 .