P-Block Elements Ques 436
Question: Which of the following inert gas liquifies easily
[Pb. CET 2002]
Options:
A) Kr
B) He
C) Ne
D) Ar
Show Answer
Answer:
Correct Answer: A
Solution:
The maximum temperature at which gas can be liquified is called its critical temperature. The gas which have high boiling point will change into liquid first and so critical temperature of the gas will be more. $ T_{C}\propto B\text{.P}\text{.} $ and B.P. $ \propto $ Molecular weight So Kr liquifies first.
