A meteal crystallises into two cubic phases, face-centred (FCC) and body - centred cubic (BCC) whose unit cell lengths are 3.5 and 3.0 Å respectively. Calculate the ratio of the densities of FCC and BCC.

A meteal crystallises into two cubic phases, face-centred (FCC) and bo

1.	A meteal crystallises into two cubic phases, face-centred (FCC) and body - centred cubic (BCC) whose unit cell lengths are 3.5 and 3.0 Å respectively. Calculate the ratio of the densities of FCC and BCC.
Answer» `(p_("FCC"))/(p_("BCC")) = (Z_("FCC"))/((a^(3)) _("FCC")) xx ((a^(3))_("BCC"))/(Z_("BCC")) = (4 xx (3.0)^(3))/(2 xx (3.5)^(3)) = 1.26 `

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A meteal crystallises into two cubic phases, face-centred (FCC) and body - centred cubic (BCC) whose unit cell lengths are 3.5 and 3.0 Å respectively. Calculate the ratio of the densities of FCC and BCC.

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