The hydride ions $({H^{-}})$ are isoelectronic with

Saline hydrides are known to react with water violently producing fire. Can $CO_2$,a well-known fire extinguisher,be used in this case? Explain.

Which of the following oxides cannot be reduced by hydrogen?

Which of the following substances is used in the laboratory for fast drying of neutral gases?

Hydrogen readily combines with non-metals and thus it shows its

The difference between heat of adsorption of ortho and para hydrogen is $......... \ kJ \ mol^{-1}$.