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What type of packing is observed in hexagonal close-packed (HCP) structures? (20

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Question: What type of packing is observed in hexagonal close-packed (HCP) structures? (2023)

Options:

  1. ABAB
  2. ABCABC
  3. AABB
  4. AAAB

Correct Answer: ABCABC

Exam Year: 2023

Solution:

Hexagonal close-packed (HCP) structures exhibit ABCABC packing.

What type of packing is observed in hexagonal close-packed (HCP) structures? (20

Practice Questions

Q1
What type of packing is observed in hexagonal close-packed (HCP) structures? (2023)
  1. ABAB
  2. ABCABC
  3. AABB
  4. AAAB

Questions & Step-by-Step Solutions

What type of packing is observed in hexagonal close-packed (HCP) structures? (2023)
  • Step 1: Understand that HCP stands for hexagonal close-packed, which is a way atoms are arranged in a solid.
  • Step 2: Learn that in HCP structures, the atoms are packed closely together to maximize space efficiency.
  • Step 3: Recognize that the packing arrangement follows a specific pattern.
  • Step 4: Identify that the pattern in HCP is called ABCABC, meaning the layers of atoms are stacked in a repeating sequence of three different arrangements.
  • Step 5: Visualize that in the first layer (A), atoms are placed in a specific arrangement, then in the second layer (B), they are placed in a different arrangement, and in the third layer (C), they return to a new arrangement that fits into the gaps of the first layer.
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