p-Block elementsHard
Question
Which of the following is the increasing order of enthalpy of vaporization ?
Options
A.NH3, PH3, AsH3
B.AsH3, PH3, NH3
C.NH3, AsH3, PH3
D.PH3, AsH3, NH3
Solution
Enthalpy of vaporization is directly proportional to the strength of inter molecular force of attraction like hydrogen bonding vander Waal′s force of attraction.
NH3 → H-bonding,
PH3 and ASH3 → Vander walls bond.
NH3 → H-bonding,
PH3 and ASH3 → Vander walls bond.
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