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JIPMER 2013
Exam
JIPMER
Year
2013
Subject
Chemistry
Chapter
Hydrogen

JIPMER 2013 · Chemistry · Hydrogen

Which of the following is the increasing order of enthalpy of...

Which of the following is the increasing order of enthalpy of vaporization?

Options

  1. ANH3,PH3,AsH3\mathrm{NH}_3, \mathrm{PH}_3, \mathrm{AsH}_3
  2. BAsH3,PH3,NH3\mathrm{AsH}_3, \mathrm{PH}_3, \mathrm{NH}_3
  3. CNH3,AsH3,PH3\mathrm{NH}_3, \mathrm{AsH}_3, \mathrm{PH}_3
  4. DPH3,AsH3,NH3\mathrm{PH}_3, \mathrm{AsH}_3, \mathrm{NH}_3

Correct answer

D. PH3,AsH3,NH3\mathrm{PH}_3, \mathrm{AsH}_3, \mathrm{NH}_3

Step-by-step solution

PH3<AsH3<NH3\mathrm{PH}_3 \lt \mathrm{AsH}_3 \lt \mathrm{NH}_3 (enthalpy of vaporisation)
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