1.

NH_(3) has a much higher bp than PH_(3) because

Answer»

`NH_(3)` has a larger molecular weight
`NH_(3)` UNDERGOES UMBRELLA inversion
`NH_(3)` FORMS hydrogen BOND
`NH_(3)` contains ionic bonds wheras `PH_(3)` containscovalent bonds

Solution :It contain intermolecular hydrogen bonding


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