Solid StateHard
Question
Lead metal has a density of 11.34 g/cm3 and crystallizes in a face-centered lattice. Choose the correct alternatives
Options
A.the volume of one unit cell is 1.214 × 10-22 cm3
B.the volume of one unit cell is 1.214 × 10-19 cm3
C.the atomic radius of lead is 175 pm
D.the atomic radius of lead is 155.1 pm
Solution
Density = 
so, Volume = 
= 1.213 × 10-22 cm3; 4r = a√2
r =
= 175 pm
Volume = a3 = 1.213 × 10-22
so, a = (1.213 × 10-24)1/3
a = 4.95 × 10-8 cm.
so, Volume = = 1.213 × 10-22 cm3; 4r = a√2r =
= 175 pmVolume = a3 = 1.213 × 10-22
so, a = (1.213 × 10-24)1/3
a = 4.95 × 10-8 cm.
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