Question

The boiling points of some group 7A hydrides are tabulated below.
gas b.p. (C)
NH3 --33
PH3 -88
AsH3 -62
Which intermolecular force or bond is responsible for the high boiling point of NH3 relative to PH3 and AsH3?
A.hydrogen bonding
B.dipole/induced dipole force
C.induced dipole/induced dipole force
D.covalent bonding
E.dipole-dipole force

Answer

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