Chapter Name : The Solid State |
Sub Topic Code : 102_12_01_08_02 |
Topic Name : Packing Efficiency |
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Sub Topic Name : Efficiency Of Packing In Body-Centered Cubic Structures |
• Packing efficiency is the percentage of total space filled by the particles. • In bcc structures, the atom at the centre will be in touch with the other two atoms diagonally arranged. • Packing efficiency of bcc structures is approximately 68%.
Particles, 2D and 3D close packing structure, octahedral and tetrahedral voids, packing efficiency.
Sal t and sugar crystals are arranged in 3 dimensional closed packed structures.
How are particles of solid arranged?
Key Words | Definitions (pref. in our own words) |
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Packing efficiency | Packing efficiency is the percentage of total space filled by the particles. |
Gadgets | How it can be used |
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Blocks, marbles | Use marbles or blocks to construct different types of closed pack structures. |
Close packed structures have less void spaces and therefore have strong solid structures.
Kitchen
Examples | Explainations |
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Salt, sugar crystal | A sugar crystal is compact and 3 dimensional cuboid structure. |
• Packing efficiency of solids having body centered cubic close packed structures is approximately 68%. It is lower as compared to the HCP and CCP structures of solids.
• Packing efficiency is the percentage of total space filled by the particles.
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