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Density of a unit cell is respresented ...

Density of a unit cell is respresented as
`rho = (" Effective no. of atoms (s)" xx "Mass of a unit cell ")/("Volume of a unit cell ")=(Z.M)/(N_(A).a^(3))`
where , mass of unit cell =mass of effectuive no . of atoms(s) or ion (s).
M= At . mass// formula
`N_(A) `= Avogadro' s no . `rArr 6.0323 xx 10^(23)`
a= edge lemght of unit cell
The density of KBr is `2.75 g //cm^(-3)` . The length of the edge of the unit cell is 645 pm .To which type of cubic crystal , KBr belongs ?

A

Simple cubic

B

bcc

C

fcc

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
C
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