a. Would you except the hydrides of `N,O` and `F` to have lower boiling points than the hydrides of their subsequent group members? Give reason. b. Can phosphorous with outer electronic configuration `3s^(2)3p^(3)` form `PH_(5)`? c. How many hydrogen-bonded water molecules(s) are associated with `CuSO_(4).5H_(2)O`?

a. Would you except the hydrides of `N,O` and `F` to have lower boilin

1.	a. Would you except the hydrides of `N,O` and `F` to have lower boiling points than the hydrides of their subsequent group members? Give reason. b. Can phosphorous with outer electronic configuration `3s^(2)3p^(3)` form `PH_(5)`? c. How many hydrogen-bonded water molecules(s) are associated with `CuSO_(4).5H_(2)O`?
Answer» Although phosphorus exhibits +3 and +5 oxidation states. It cannot form `PH_(5)`. Besides some other cosiderations, high `Delta_(a)H` value of dihydrogen and `Delta_(eg)H` value of hydrogen do not favour to exhibit the highest oxidation state of P and consequently the formation of `PH_(5)`.

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