A metal crystallises into two cubic phases , face-centred cubic (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 metal crystallises into two cubic phases , face-centred cubic (FCC)

1.	A metal crystallises into two cubic phases , face-centred cubic (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» <html><body><p></p>Solution :`rho_"FCC"/<a href="https://interviewquestions.tuteehub.com/tag/rho-623364" style="font-weight:bold;" target="_blank" title="Click to know more about RHO">RHO</a>"BCC"=Z_"FCC"/(a^<a href="https://interviewquestions.tuteehub.com/tag/3-301577" style="font-weight:bold;" target="_blank" title="Click to know more about 3">3</a>)_"FCC"<a href="https://interviewquestions.tuteehub.com/tag/xx-747671" style="font-weight:bold;" target="_blank" title="Click to know more about XX">XX</a>(a^3)_"BCC"/Z_"BCC"=(4xx(3.0)^3)/(2xx(3.5)^3)=1.26`</body></html>