JIPMER 2013
- Exam
- JIPMER
- Year
- 2013
- Subject
- Chemistry
- Chapter
- p Block Elements (Group 15, 16, 17 & 18)
JIPMER 2013 · Chemistry · p Block Elements (Group 15, 16, 17 & 18)
Which of the following is the increasing order of enthalpy of...
Which of the following is the increasing order of enthalpy of vaporization?
Options
- A
- B
- C
- D
Correct answer
D.
Step-by-step solution
The inter-particle forces are strongest in (\mathrm{NH}_3) (Hydrogen bonds). In (\mathrm{PH}_3) and (\mathrm{AsH}_3) the inter-particle forces are dipole-dipole forces which are relatively stronger in (\mathrm{AsH}_3). So the increasing order of vaporization is (\mathrm{PH}_3, \mathrm{AsH}_3), and (\mathrm{NH}_3)