Question

What is void and packing fraction ?​

Answer 1

Answer:

Packing Fraction Formula =Volume Occupied by all constituent particlesTotal Volume of Unit Cell. There is always some space inside a cell, and this is known as Void Space. It can be derived as follows: Void Space Fraction: 1- Packing Fraction. Percentage of Void Space: 100 - Packing Efficiency.

Explanation:

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Answer 2

Answer:

Voids :-

Voids literally mean gaps between the constituent particles. Voids in solid states mean the vacant space between the constituent particles in a closed packed structure.

Packing fraction:-

Packing fraction is defined as the ratio of volume of atoms occupying the unit cell to the volume of unit cell. ... In a simple cubic structure, the atoms occupies at the eight corners. An atom at the corner is equally shared by 8 unit cells. So the contribution of one atom to a unit cell is 1/8.