D-And F-Block Elements Ques 58
Question: Which one of the following compounds is not coloured
[AIIMS 1997]
Options:
A) $ Na_2CuCl_4 $
B) $ Na_2CdCl_4 $
C) $ K_4Fe{{(CN)}_6} $
D) $ K_3Fe{{(CN)}_6} $
Show Answer
Answer:
Correct Answer: B
Solution:
$ Na_2CdCl_4 $ - no unpaired electrons.