hydrides|of#!#hydrogen

In which of the following hydrides, hydrogen exists in negative oxidation state?

Assertion :- Oxidation state of Hydrogen is +1 in H_(2)O while -1 in CaH_(2) . Reason :- CaH_(2) is a metal hydride and for metal hydrides, hydrogen is assigned the oxidation number of -1 .

During electrolysis of fused calcium hydride, the hydrogen is produced at

In barium hydride, hydrogen is-

In complex hydrides, hydride ions act as ligand and are coordinated to metal ions. These hydrides are good reducing agents. Which of the following hydrides is not a complex hydride ?

A: Electrolysis of molten calcium hydride produces hydrogen gas at the cathode. R: Hydrogen in calcium hydride is present as H^(+) ion.

Assertion : Ionic hydrides like hydrolith liberates hydrogen gas on reaction with water. Reason : The resultant soution acts as strong base.