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A compound of molecular mass 155 gm "mol...

A compound of molecular mass 155 gm `"mol"^(-1)` possessing crystal defect exist as orthorhombic crystal having values of a, b and c are respectively `4.2A^(@),8.6A^(@)and8.3A^(@)`. The density is observed to be 3.3 gm/cc, the number of formula units calculated per unit cell is

A

2.93

B

4.65

C

3.84

D

6.02

Text Solution

Verified by Experts

The correct Answer is:
C
`Z=(VxxN_(A)xxd)/(M)=(4.2xx8.6xx8.3xx10^(-24)xx6.023xx10^(23)xx3.3)/(155)=3.84`
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