Advertisements
Advertisements
प्रश्न
The total number of tetrahedral voids in the face-centered unit cell is ______.
पर्याय
6
8
10
12
Advertisements
उत्तर
The total number of tetrahedral voids in the face-centered unit cell is 8.
Explanation:
Fee unit cell contains 8 tetrahedral voids at centre of each 8 smaller cube of a unit cell as shown below
Eight tetrahedral voids per fee unit vell
Each cube represented by numeric 1, 2, 3, 4, 5, 6, 7, 8 contains one tetrahedral void.

Each cube contains one tetrahedral void its body centre as shown above

APPEARS IN
संबंधित प्रश्न
Gold (atomic radius = 0.144 nm) crystallises in a face-centred unit cell. What is the length of a side of the cell?
Which is true for F-centers?
Which crystal system has axial angles equal to 90°?
In zinc blend structure:
A unit cell of BaCl2 (fluorite structure) is made up of ____________.
The fraction of the total volume occupied by the atoms present in a simple cube is ____________.
A crystal has the lattice parameters a ≠ b ≠ c and α = β = γ = 90°. The crystal system is
CsBr, crystallises in a body centred cubic lattice. The unit cell edge length is 436.6 pm. Given that the atomic mass of Cs = 133 a. m. u and that of Br = 80 a. m. u and Avogadro's number being 6.02 × 1023 mol–1, the density of Cs Br is:- .
Sodium crystallises in a body-centred cubic unit cell. (bcc) with edge length 4.29 A. what is the radius of the sodium atom? What is the length of the body diagonal of the unit cell?
How many kind of space lattice are possible in a crystal.
The packing fraction for a body-centred cube is
The density of a crystal is given by the formula
The correct option for the number of body-centered unit cells in all 14 types of Bravais lattice unit cells is ______
Orthorhombic crystal has the following unit cell dimensions ______.
A certain element crystallises in a bcc lattice of unit cell edge length 27 A°. If the same element under the same conditions crystallises in the fcc lattice, the edge length of the unit cell in A° will be ______. (Round off to the Nearest Integer).
[Assume each lattice point has a single atom]
Gold crystallizes in a face-centered cubic lattice. If the length of the edge of the unit cell is 407 pm. The density of gold assuming it to be spherical is ______ g/cm3. Atomic mass of gold = 197 amu.
Which primitive unit cell has unequal edge lengths (a ≠ b ≠ c) and all axial angles different from 90°?
