Which has the lowest boiling point?A. `NH_(3)`B. `PH_(3)`C. `AsCl_(3)`

1.	Which has the lowest boiling point?A. `NH_(3)`B. `PH_(3)`C. `AsCl_(3)`D. `SbH_(3)`
Answer» Correct Answer - B In the hydrides of group 15, the boiling points changes as `underset(238.5 K)(NH_(3)) gt underset(185.5K)(PH_(3))lt underset(210.6 K)(AsH_(3)) lt underset(254.6K)(SbH_(3)) lt underset(290 K)(BiH_(3))` `:.` Generally mass increases then boiling point increases. The higher point of `NH_(3)` is due to excessive hydrogen bonding, so `PH_(3)` have lowest boiling point among hydrides of group number `15`, i.e, nitrogen family.

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Which has the lowest boiling point?A. `NH_(3)`B. `PH_(3)`C. `AsCl_(3)`D. `SbH_(3)`

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