If the lattice parameter for a crystalline structure is 3.6 A, then the atomic radius in fcc crystal is
If the lattice parameter for a crystalline structure is 3.6 A, then the atomic radius in fcc crystal is
(a) 2.92 A
(b) 1.27 A
(c) 1.81 A
(d) 2.10 A
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The correct option is (b) 1.27 A.
Explanation:
The atomic radius in a f c.c. crystal is a/2√2
where a is the length of the edge of the crystal.
Atomic radius = 3.6 A/ 2√2 = 1.27 A.
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