Name the classes fo hydrides to which H_(2)O,B_(2)H_(6) and NaH belong

1.	Name the classes fo hydrides to which H_(2)O,B_(2)H_(6) and NaH belong.
Answer» Solution :`H_(2)O` (covalent hydride , ELECTRON RICH), `B_(2)H_(6)`(Covalent hydride, electron-deficient ), NaH (ionichydride).

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