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Chapter 12: Q12.141CP (page 499)

The crystal structure of sodium is based on the body-centered cubic unit cell. What is the mass of one unit cell of Na?

Short Answer

Expert verified

Mass of one unit cell of Na is 46g/mol.

Step by step solution

01

Definition of crystal structure

In a crystal, the constituent particles form a structure by repeating a symmetric pattern along three dimensions. This symmetric structure of the particles in a crystal is named as crystal structure.

02

Calculation of mass of one unit cell

Massofaunitcell=Numberofionsintheunitcell脳massofanatomintheunitcellNumberofionsinbody-centeredcubicunitcell=18脳8+1=2

Mass of one Na atom=23g/mol.

Therefore, the mass of the unit cell of Nais2脳23g/mol=46g/mol.

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