what are octahedral voids?
Asked by ak4450120 | 8th Apr, 2017, 10:36: AM
In the same packing one half of the triangular voids in the first layer are occupied by spheres in the second layer while the other half remains unoccupied. The triangular voids ‘b’ in the first layer is overlapped by the triangular voids in the second layer. The interstitial void, formed by combination of two triangular voids of the first and second layer is called octahedral void because this is enclosed between six spheres centres of which occupy corners of a regular octahedron.
In tetrahedral voids---In a close packing, the number of tetrahedral void is double the number of spheres, so there are two tetrahedral voids for each sphere .
In a multi layered close packed structure , there is a tetrahedral hole above and below each atom hence there is twice as many tetrahedral holes as there are in close packed atoms
Radius of the tetrahedral void relative to the radius of the sphere is 0.225.
In octahedral Voids----In close packing, the number of octahedral voids is equal to the number of spheres. Thus, there is only one octahedral void associated with each sphere. Radius of the octahedral void in relation to the radius of the sphere is 0.414.
Answered by Vaibhav Chavan | 8th Apr, 2017, 12:10: PM
- what craystalline solid
- why thionyl chloride method in the best method for prepare alkyl chloride
- what is unit cell
- write distinguish feature of covalent solids?
- unit cell
- Derive the formula of the ferric oxide
- give reason crystaline solid are anisotropic
- Can you tell me sir which questions are very important in chemistry for board exam 2019
- Nickel crystallises in a fcc unit cell with a cell edge length of 0.3524 nm . The radius of the nickel atoms
- why is glass considered super cooled liquid ? (2m)
Kindly Sign up for a personalised experience
- Ask Study Doubts
- Sample Papers
- Past Year Papers
- Textbook Solutions
Verify mobile number
Enter the OTP sent to your number