Which ionic hydride is stable upto its melting point?
The correct option is C $$LiH$$
All ionic hydrides of group $$I$$ and group $$II$$ decompose before their melting point except $$LiH$$.
$$LiH$$ is stable upto its melting point.
The ionic character of the bonds in hydrides increases from $$LiH$$ to $$CsH$$ and their stability decreases in the same order.