Question

Arrange according to boiling point NH3, PH3, AsH3, SbH3, BiH3

Answer 1

Answer:

From the question NH3 will have highest boiling point among the following since the NH3 has the ability to form hydrogen bonds.

While the other molecules in the given series will be having increased boiling point with increase in their size and only the Nh3 will be reason for hydrogen bond not the others  so, the result will be:

NH3 > SbH3 > AsH3 > PH3

Answer 2

Answer:

The order is

BiH₃ > SbH₃ > NH₃ > AsH₃ > PH₃

Explanation:

Boiling Point of BiH₃ is -16.8 °C

Boiling Point of SbH₃ is -18.4 °C

Boiling Point of NH₃ is -33 °C

Boiling Point of AsH₃ is -62.4 °C

Boiling Point of PH₃ is -87 °C

As we go down the group of Nitrogen family in the periodic table, the boiling point increases due to the effect of Van der Walls force but the Boiling Point of NH₃ is higher because of hydrogen bonding.