Grade 8Inorganic Chemistry
Boiling point of NH3 and PH3, ASH3 , SbH3 in increasing order with their correct boiling point values.
2 Answers
Shreyansh
NH3>Ph3>AsH3>SbH3 bcoz boiling point increase as we move down the group. Hence this is the correct order of boiling point of the compounds you. I think this may help you
Lovepreet singh
Bp of NH3: -33°C , PH3: -87°C , AsH3: -62.4°C , SbH3: -18°C
So the increasing order of boiling point is
PH3
The regular trend for boiling point is that it increases down the group due to increase in size and van der waal forces between atoms.But the B.p of ammonia(NH3) is more than Ph3 and Ash3
due to Hydrogen bonding in liquid state.The B.p of SbH3 is still higher due to high extent of van der waal forces.
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