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Question: Answered & Verified by Expert
The ratio of close packed atoms to tetrahedral holes in cubic close packing is
ChemistrySolid StateNEET
Options:
  • A 1 : 1
  • B 1 : 3
  • C 1 : 2
  • D 2 : 1
Solution:
1418 Upvotes Verified Answer
The correct answer is: 1 : 2
In close packed lattice atoms =Nc8+Nf2
=8×18+6×12=1+3=4
Every constitute has 2 tetrahedral voids
So tetrahedral voids =4×2=8
Ratio will be 4 : 8 = 1 : 2.

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