Advertisements
Advertisements
प्रश्न
In which of the following structures coordination number for cations and anions in the packed structure will be same?
पर्याय
Cl– ion form fcc lattice and Na+ ions occupy all octahedral voids of the unit cell.
Ca2+ ions form fcc lattice and F– ions occupy all the eight tetrahedral voids of the unit cell.
O2– ions form fcc lattice and Na+ ions occupy all the eight tetrahedral voids of the unit cell.
S2– ions form fcc lattice and Zn2+ ions go into alternate tetrahedral voids of the unit cell.
Advertisements
उत्तर
Cl– ion form fcc lattice and Na+ ions occupy all octahedral voids of the unit cell.
Explanation:
NaCl crystals have rock salt structure having fee lattice in which Cl– ions are present at fee lattice points and face centre and Na+ occupies all the octahedral voids of given unit cell.
Where, coordination number of Na+ = 6
APPEARS IN
संबंधित प्रश्न
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?
How will you distinguish between the following pair of terms?
Tetrahedral and octahedral 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?
Total number of voids in 0.5 mole of a compound which forms hexagonal close packed structure is ____________.
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:
In which of the following crystals alternate tetrahedral voids are occupied?
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:
If Germanium crystallises in the same way as diamond, then which of the following statement is not correct?
In the cubic close packing, the unit cell has ______.
In which of the following arrangements octahedral voids are formed?
(i) hcp
(ii) bcc
(iii) simple cubic
(iv) fcc
Which of the following is not true about the voids formed in 3 dimensional hexagonal close packed structure?
(i) A tetrahedral void is formed when a sphere of the second layer is present above triangular void in the first layer.
(ii) All the triangular voids are not covered by the spheres of the second layer.
(iii) Tetrahedral voids are formed when the triangular voids in the second layer lie above the triangular voids in the first layer and the triangular shapes of these voids do not overlap.
(iv) Octahedral voids are formed when the triangular voids in the second layer exactly overlap with similar voids in the first layer.
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?
A solid compound XY has Nacl structure. If the radium of cation (X+) is 100 pm, the radium of anion (r–) will be:-
