AIPMT PRELIMS2012Chemistry-Solid State
AIPMT PRELIMS 2012 Chemistry Crystal Lattices MCQ Question
Type: MCQ-numerical-Medium
A metal crystallizes with a face-centered cubic lattice. The edge of the unit cell is 408 pm. The diameter of the metal atom is :
A
204 pm
B
288 pm
C
408 pm
D
144 pm
Correct Answer
Option B
Detailed Explanation
In a face-centered cubic lattice, the relation between the edge length (a) and the atomic radius (r) is a = 2√2r. Solving gives the diameter as 288 pm.
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