Question: A metal crystallizes into two cubic phases BCC and FCC. The ratio of densities of FCC and BCC is equal to 1.5. Calculate the difference between the unit cell lengths of the FCC and BCC crystals if the edge length of the FCC crystal is equal to 4.0 ?.
Options
A : 0.5 ?
B : 0.37 ?
C : 0. 28 ?
D : 0.73 ?
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