Solid State Question 43
Question: An element (atomic mass $ =100g/mol $ ) having bcc structure has unit cell edge 400 pm. Then, density of the element is
Options:
A) $ 10.376g/cm^{3} $
B) $ 5.188g/cm^{3} $
C) $ 7.289g/cm^{3} $
D) $ 2.144g/cm^{36} $
Show Answer
Answer:
Correct Answer: B
Solution:
[b] $ \rho =\frac{Z\times M}{N _{A}\times a^{3}} $
$ =\frac{2\times 100}{6.023\times 10^{23}\times {{( 400\times {{10}^{-10}} )}^{3}}} $
$ =5.188g/cm^{3} $
BETA
