Question

The density of aluminium is 2700 Kg mol-1. Aluminium crystallizes in face centred cubic lattice.
Calculate the radius of aluminium. Atomic mass of Ail is 27 g mol-1.​

Answer 1

Answer:

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Explanation:

ρ=Z×Ma3×N0  or a3=Z×Mρ×N0=4×0.027kgmol−12700kgm−3×6.02×1023mol−1

=66.4×10−30m3ora=(66.4)1/3×10−10m

Putting (66.4)1/3=x,logx=13log66.4=1.82223=0.6074∴x=0.4.050∴a=4.05×10−10 m

For fcc, r=a22–√=4.05×10−10m2×1.414=1.43×1010 m

Answer 2

Answer:

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