Solid State Question 55
Question: How many effective $ N{{a}^{+}} $ and $ C{{l}^{-}} $ ions are present respectively in a unit cell of $ NaCl $ solid (Rock salt structure) if all ions along line connecting opposite face centres are absent-
Options:
A) 3, 3
B) $ \frac{7}{2},4 $
C) $ \frac{7}{2},\frac{7}{2} $
D) $ 4,\frac{7}{2} $
Show Answer
Answer:
Correct Answer: A
Solution:
[a] No. of $ N{{a}^{+}}=4-1=3 $ No. of $ C{{l}^{-}}=4-( 2\times \frac{1}{2} )=3 $
BETA
