Which hydride of group 15 has lowest boiling point?
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ammonia or azane has lowest boiling point among these
SMUS:
How NH3 ?
why
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NH3>PH3<AsH3<SbH3<BiH3NH3>PH3<AsH3<SbH3<BiH3
From PH3PH3 to BiH3BiH3, the boiling points increase with increase in molecular weights, due to the increase in Van der Waal's forces with molecular mass.
However, boiling point of NH3>PH3NH3>PH3 even though NH3NH3 has lower molecular mass than PH3PH3, due to the intermolecular hydrogen bonding in Ammonia that is not present in PH3PH3 and other hydrides in Group-15.
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