NCERT Class XII Chemistry
Chapter - The Solid State
Questions with Solutions
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Question : 21
Total: 50
Gold (atomic radius = 0.144 nm) crystallises in a face-centred unit cell. What is the length of a side of the cell?
Solution:
Given r = 0.144 nm , a = ?
Forf c c , a = 2 √ 2 r
= 2 × 1.414 × 0.144 n m
= 0.407 n m
For
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