Solid State Question 245
Question: If the coordination of $ C{{a}^{2+}} $ in $ CaF_2 $ is 8, then the coordination number of $ {{F}^{-}} $ ion would be
Options:
A) 3
B) 4
C) 6
D) 8
Show Answer
Answer:
Correct Answer: B
Solution:
In each $ CaF_2 $ each calcium cation is surrounded by eight fluoride anions in a body centred cubic arrangement. Each fluoride ion is in contact with four calcium ions. Thus $ CaF_2 $ has 8 : 4 co-ordination number.
BETA
