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Which of the following structures has the highest packing efficiency? (2019)

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Question: Which of the following structures has the highest packing efficiency? (2019)

Options:

  1. Simple cubic
  2. Body-centered cubic
  3. Face-centered cubic
  4. Hexagonal close-packed

Correct Answer: Face-centered cubic

Exam Year: 2019

Solution: 

The face-centered cubic (FCC) structure has the highest packing efficiency of approximately 74%.

Which of the following structures has the highest packing efficiency? (2019)

Practice Questions

Q1
Which of the following structures has the highest packing efficiency? (2019)
  1. Simple cubic
  2. Body-centered cubic
  3. Face-centered cubic
  4. Hexagonal close-packed

Questions & Step-by-Step Solutions

Which of the following structures has the highest packing efficiency? (2019)
  • Step 1: Understand what packing efficiency means. It refers to how much space is filled by atoms in a crystal structure compared to the total space available.
  • Step 2: Learn about different types of crystal structures. The common ones are simple cubic, body-centered cubic (BCC), and face-centered cubic (FCC).
  • Step 3: Know the packing efficiency values for each structure: Simple cubic has about 52%, BCC has about 68%, and FCC has about 74%.
  • Step 4: Compare the packing efficiencies. FCC has the highest packing efficiency at approximately 74%.
  • Step 5: Conclude that the face-centered cubic (FCC) structure has the highest packing efficiency among the options given.
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