Organize the accompanying NaH, MgH2 and H2O arranged by expanding diminishing property.

Solution:

Ionic hydrides are solid diminishing specialists. NaH can undoubtedly give its electrons. Henceforth, it is most diminishing in nature. Both, MgH2 and H2O are covalent hydrides. H2O is less lessening than MgH2 since the bond separation energy of H2 O is higher than MgH2. Subsequently, the expanding request of the lessening property is H2O < MgH2 < NaH.