Hydrides and H2O

Which hydride of group - 16 hydrides water (H_(2)O) has high bioling point. to Among group - 16 hydrides water (H_(2)O) has weakest acidic character.

In case of the hydrides H_2O, H_2S, H_2Se and H_2Te the acid strength of aqueous solution of equimolar concentration.

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 .

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 .

The hydride ions (H^-) are isoelectronic with