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The density of KBr is 2.75 gm//c c lengt...

The density of `KBr` is `2.75 gm//c c` length of the unit cell is `654pm` ( atomic masses of `K=38,Br=80)` then what is true about the predicted nature of the solid

A

Soild has F.C.C. structure with co-ordination number =6

B

Solid has simple cubic structure with co-ordination number =4

C

Solid has F.C.C structure with co-ordination number 1

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
A
`2.75=(Zxx118)/((6.54xx10^(-8))^(3)xx6.023xx10^(-23))rArr Z=4` (fcc with NaCl type structure)
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