Question

For one mole close packed spheres how many octahedral and tetrahedral voids are present

Answer 1

Hello Dear,

◆ Answer -

Octahedral voids = 6.022×10^23

Tetraedral voids = 12.044×10^23

◆ Explanation -

Each unit cells in closed packed structure contains 4 atoms.

No of unit cells in closed packed structure by one mole atoms is -

N = NA / 4

N = 6.022×10^23 / 4

N = 1.505×10^23 unit cells

Each unit cell contains 4 octahedral and 8 tetrahedral voids.

Number of octahedral voids is -

Octahedral voids = 4 × N

Octahedral voids = 4 × 1.505×10^23

Octahedral voids = 6.022×10^23

Number of tetrahedral voids is -

Tetraedral voids = 8 × N

Tetraedral voids = 8 × 1.505×10^23

Tetraedral voids = 12.044×10^23

Best luck dear..

Answer 2

Answer:

Each unit cells in closed packed structure contains 4 atoms.

• Each unit cell contains 4 octahedral and 8 tetrahedral voids.