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Aluminium crystallizes in an fcc structure. The atomic radius of the metal is 125 pm. What is the length of the side of the unit cell of the metal?
Aluminium crystallizes in an fcc structure. The atomic radius of the metal is 125 pm. What is the length of the side of the unit cell of the metal?
For fcc structure, r = 125 pm,
a= 2 ✕ 1.414 ✕ 1.25 pm = 353.5 pm ≅ 354 pm
So, the edge length of the metal is 354 pm.