Advertisements
Advertisements
Question
How will you distinguish between the following pairs of terms: Tetrahedral and octahedral voids
Solution
Tetrahedral voids and octahedral voids:
| Tetrahedral voids | Octahedral voids |
|
The tetrahedral void is the name given to the vacant space formed by touching of four spheres, as shown in the figure.
|
Octahedral voids are formed by combination of voids of two triangular layers of atoms, when one triangular layer is placed above another, as shown in the figure,
|
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 octachedral void is r and radius of the atoms in close packing is R, derive relation between r and R.
A compound is formed by two elements A and B. The element B forms cubic close packing and atoms of A occupy `1/3"rd"` of tetrahedral voids. The formula of this compound is ____________.
What is the coordination number of sodium in Na2O?
If AgI crystallises in zinc blende structure with I– ions at lattice points. What fraction of tetrahedral voids is occupied by Ag+ ions?
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:
The coordination number of Y will be in the XY types of crystal:
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:-
