Solid State Question 273
Question: In orthorhombic, the value of a, b and c are respectively 4.2 $ \overset{o}{\mathop{A}} $ , 8.6 $ \overset{o}{\mathop{A}} $ and 8.3 $ \overset{o}{\mathop{A}} $ . Given the molecular mass off solute is 155 gm $ mo{{l}^{-1}} $ and that of density is 3.3 g/cc, the number of formula units per unit cell is
Options:
A) 2
B) 3
C) 4
D) 6
Show Answer
Answer:
Correct Answer: C
Solution:
[c] $ Z=\frac{V\times N _{A}\times d}{M} $
$ =\frac{4.2\times 8.6\times 8.3\times {{10}^{-24}}\times 6.023\times 10^{23}\times 3.3}{155} $
$ =3.84=4 $
BETA
