P-Block Elements Ques 182
Question: Which of the following halides is least stable and has doubtful existence
[IIT 1996]
Options:
A) $ CI_4 $
B) $ GeI_4 $
C) $ SnI_4 $
D) $ PbI_4 $
Show Answer
Answer:
Correct Answer: D
Solution:
$ PbI_4 $ is least stable because of two reasons (1) Size of iodine is biggest. (2) $ +2 $ oxidation state of Pb is more stable than $ +4 $ state because of inert pair effect.
