What is the formula for thepack ingfraction in soild State

What is the formula  for thepack ingfraction in soild State


1 Answers

25757 Points
4 years ago
  • Packing faction or Packing efficiency is the percentage of total space filled by the particles.

  • Both  hcp & ccp though different in form are equally efficient. They occupy the maximum possible space which is about 74% of the available volume. Hence they are called closest packing.

  • In addition to the above two types of arrangements a third type of arrangement found in metals is body centred cubic (bcc) in which space occupied is about 68%.

  • Packing Efficiency = \frac{Volume\ occupied\ by\ all\ the\ spheres\ in \ unit\ cell}{Total\ volume\ of\ the\ unit\ cell}\times 100

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