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Lead is fcc and its atomic radius is 0.175nm.What is its unit cell edge length

Answer» OBTAIN the properties for lead, from table 3.1, “Atomic radii and crystal STRUCTURES for 16 metals” as follows:

Atomic radii for lead 

Crystal structure of lead is FCC.

Since lead has an FCC crystal structure, obtain the relation for the volume of lead as follows:

Write the equation for unit CELL length for FCC crystal structure.



Here, R is the atomic RADIUS of lead.

Obtain the relation for the volume of the unit cell of the lead as follows:



Substitute  for.

 ……. (1)



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