Answer:
(i) Due to formation of
intermolecular H - bonding N has higher boiling point than PH..
(ii)
In the structure
of only two hydrogen atoms are attached
to oxygen which are acidic and replaceable. Hence it is a dinrotic acid.
(iii) As
fluorine is more electronegative than oxygen sc compound of oxygen and fluorine
are called oxygen fluorides and not fluorine oxides.
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