P-Block Elements Ques 97
Question: Which is the most volatile compound
[CPMT 1979; AIIMS 1980; DPMT 1982; Kurukshetra CEE 1998; J & K CET 2005; DPMT 2002]
Options:
A) $ HF $
B) $ HCl $
C) $ HBr $
D) $ HI $
Show Answer
Answer:
Correct Answer: B
Solution:
Hydride - | HF | HCl | HBr | HI |
---|---|---|---|---|
B.pt (in K) - | 293 | 189 | 206 | 238 |
Because of having low b.p. HCl is more volatile.