Advertisements
Advertisements
प्रश्न
The total number of tetrahedral voids in the face-centered unit cell is ______.
विकल्प
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°?
Calculate the number of unit cells present in 1 g of gold which has a face-centered cubic lattice.
The space lattice of graphite is ____________.
Coordination numbers of Zn2+ and S2– in the crystal structure of wurtzite are ____________.
In face-centered cubic lattice, a unit cell is shared equally by how many unit cells?
In zinc blend structure:
How many lithium atoms are present in a unit cell with edge length 3.5 Å and density 0.53 g cm−3? (Atomic mass of Li = 6.94):
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:- .
How many kind of space lattice are possible in a crystal.
The density of a crystal is given by the formula
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]
Which primitive unit cell has unequal edge lengths (a ≠ b ≠ c) and all axial angles different from 90°?
