Advertisements
Advertisements
Question
In the cubic close packing, the unit cell has ______.
Options
4 tetrahedral voids each of which is shared by four adjacent unit cells.
4 tetrahedral voids within the unit cell.
8 tetrahedral voids each of the which is shared by four adjacent unit cells.
8 tetrahedral voids within the unit cells.
Advertisements
Solution
In the cubic close packing, the unit cell has 8 tetrahedral voids within the unit cells.
Explanation:
Eight tetrahedral voids per fee unit cell
Each cube represented by numeric 1, 2, 3, 4, 5, 6, 7, 8 contains one tetrahedral void.
Each cube contains one tetrahedral void at its body centre as shown above
APPEARS IN
RELATED QUESTIONS
What is the formula of a compound in which the element Y forms hcp lattice and atoms of X occupy 2/3rd of tetrahedral voids?
If the radius of the octahedral void is r and the radius of the atoms in close packing is R, derive the relation between r and R.
How many tetrahedral voids can exist per unit cell in a hexagonal close packing sphere?
The unit cell of a substance has cations A+ at the corners of the unit cell and the anions B− at the center. The simplest formula of the substance is ____________.
Total number of voids in 0.5 mole of a compound which forms hexagonal close packed structure is ____________.
The Ca2+ and F– are located in CaF2 crystal, respectively at face centered cubic lattice points and in ____________.
If AgI crystallises in zinc blende structure with I– ions at lattice points. What fraction of tetrahedral voids is occupied by Ag+ ions?
Which set of following characteristics for ZnS crystal is correct?
Percentages of free space in cubic close packed structure and in the body-centered packed structure are respectively:
The number of octahedral voids present in a lattice is A. The number of closed packed articles, the number of tetrahedral voids generated is B the number of closed packed particles:
In the hexagonal close-packed structure of a metallic lattice, the number of nearest neighbours of a metallic atom is ____________.
If Germanium crystallises in the same way as diamond, then which of the following statement is not correct?
The coordination number of Y will be in the XY types of crystal:
In a compound, nitrogen atoms (N) make cubic close packed lattice and metal atoms (M) occupy one-third of the tetrahedral voids present. Determine the formula of the compound formed by M and N?
In which of the following structures coordination number for cations and anions in the packed structure will be same?
A compound is formed by two elements A and B. The element B forms a cubic close-packed structure and atoms of A occupy `1/3` of the tetrahedral voids. If the formula of the compound is AxBy then the value x + y is in the option:
