Home
Class 12
CHEMISTRY
Every atom or ion that forms an fcc unit...

Every atom or ion that forms an fcc unit cell is surrounded by

A

Six `OVs` and eight `TVs`.

B

Eight `OVs` and Six `TVs`.

C

Six `OVs` and six `TVs`.

D

Eight `OVs` and four `TVs`.

Text Solution

Verified by Experts

The correct Answer is:
A
Look at corner at atom of fcc unit cell. A corner aom can support `8` unit cell. In each cube, at a distance of `sqrt(3)a//4` from corner atom, therre is a tetrahedral void, it implied each atom is surrounded by eight tetrahedral voids. At the centre of edge, there is an octahedral void. Each corner can support six edges and hence it is surrounded by six octahedral voids.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • SOLID STATE

    CENGAGE CHEMISTRY|Exercise Exercises (Assertion-Reasoning)|19 Videos

  • SOLID STATE

    CENGAGE CHEMISTRY|Exercise Exercises (Interger)|9 Videos

  • SOLID STATE

    CENGAGE CHEMISTRY|Exercise Exercises (Multiple Correct)|39 Videos

  • REDUCTION AND OXIDATION REACTION OF ORGANIC COMPOUNDS

    CENGAGE CHEMISTRY|Exercise SUBJECTIVE TYPE|3 Videos

  • SOLUTIONS

    CENGAGE CHEMISTRY|Exercise Ex 2.3 (Objective)|9 Videos

Similar Questions

Explore conceptually related problems

Number of atoms per unit cell in fcc and bcc unit cells are 4 and 2 respectively. Given statement wrong or right?

The vacant space in FCC unit cell is

Knowledge Check

  • Number of atoms in fcc unit cell is

    A
    1
    B
    2
    C
    3
    D
    4

  • Only those atoms which form four covalent bonds produce a repetitive three dimensional structure using only covalent bonds, e.g., diamond structure. The latter is based on an fcc lattice where four out of the eight tetrahedral holes are occupied by carbon atoms. Every atom in this structure is surrounded tetrahedrally by four others. Germanium, silicon and grey tin also crystallize in the same way as diamond ("Given " sin 54^(@) 44'=0.8164) Total number of unit cells in one gram of such sample is

    A
    `4.95times10^(21)`
    B
    `2.01times10^(22)`
    C
    `6.27times10^(21)`
    D
    `4.95times10^(22)`

  • In sc, bcc and fcc the ratio of number of atoms per unit cell is given by

    A
    `1:2:3`
    B
    `4:2:1`
    C
    `1:2:4`
    D
    `1:1:3`

    • Similar Questions

    Explore conceptually related problems

    What is common in HCP and FCC unit cell ?

    Number of tetrahedral voids in the fcc unit cell is :

    The number of atoms contained in a fcc units cell of a monatomic substance is

    The number of atoms contained in a fcc unit cell of a monoatomic substance is

    The volume of atoms (radius r) present in fcc unit cell of metal is :

    Home
    Profile