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In which of the following arrangement...

In which of the following arrangements, Octahedral voids are formed ?

A

hcp

B

bcc

C

simple cubic

D

fcc

Text Solution

Verified by Experts

The correct Answer is:
A, B
Octahedral voids are formed in close packing viz hcp and fcc.
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An octahedral void is surrounded by

In HCP or CCP constituent particles occupy 74% of the available space. The remaining space (26%) in between the spheres remains unoccupied and is called interstitial voids or holes. Considering the close packing arrangement, each sphere in the second layer rests on the hollow space of the first layer, touching each other. The void created is called tetrahedral void. If R is the radius of the spheres in the close packed arrangement then, R (radius of tetrahedral void) = 0.225 R In a close packing arrangement, the interstitial void formed by the combination of two triangular voids of the first and second layer is called octahedral coid. Thus, double triangular void is surrounded by six spheres. The centre of these spheres on joining, forms octahedron. If R is the radius of the sphere. in a close packed arrangement then, R (radius of octahedral void = 0.414 R). In the figure given below, the site marked as S is a

Knowledge Check

  • In which of the following arrrangements octahedral voids are formed ?

    A
    hcp
    B
    bcc
    C
    simple cubic
    D
    fcc

  • in which of the following arrangement octahedral voids are formed ?

    A
    hcp
    B
    bcc
    C
    simple cubic
    D
    fcc

  • Which of the following represent octahedral void ?

    A
    B
    C
    D

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    In HCP or CCP constituent particles occupy 74% of the available space. The remaining space (26%) in between the spheres remains unoccupied and is called interstitial voids or holes. Considering the close packing arrangement, each sphere in the second layer rests on the hollow space of the first layer, touching each other. The void created is called tetrahedral void. If R is the radius of the spheres in the close packed arrangement then, R (radius of tetrahedral void) = 0.225 R In a close packing arrangement, the interstitial void formed by the combination of two triangular voids of the first and second layer is called octahedral coid. Thus, double triangular void is surrounded by six spheres. The centre of these spheres on joining, forms octahedron. If R is the radius of the sphere. in a close packed arrangement then, R (radius of octahedral void = 0.414 R). Mark the false statement :

    Which of the following shall form an octahedral complex ?

    Which of the following shall form an octahedral complex ?

    Which of the following will form an inner octahedral complex?

    coordination number of Octahedral void is

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