Q57.A certain element crystallises in a bcc lattice of unit cell edge length 27 A. If the same element under the same o conditions crystallises in the fcc lattice, the edge length of the unit cell in A will be __________. (Round off to the Nearest Integer). [Assume each lattice point has a single atom] [Assume √3 = 1. 73, √2 = 1. 41]
What This Question Tests
This question requires comparing the relationship between atomic radius and edge length for different crystal lattices (bcc and fcc) to find the unit cell edge length under different packing conditions.
Concepts Tested
Formulas Used
4r = √3a (for bcc)
4r = √2a (for fcc)
📚 NCERT Sections This Tests
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📋 Question Details
- Chapter
- Solid State
- Topic
- Crystal Lattices
- Year
- 2021
- Shift
- 16 Mar Shift 1
- Q Number
- Q57
- Type
- Numerical
- NCERT Ref
- Class 12 Chemistry Ch 1: Solid State
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