Hello …..Arrange the following in order of increasing electrical conductanceand explain it how ??CaH2, BeH2and TiH2.

the electrical conductance is depend upon ionic and covalent charecter . 
BEH2 is covalent hydrides , so, it does not conduct cah2 is ionic hydrides , so, it will conduct in molten state , 
tih2 is metallic and conduct electricity in room temp . 
hence increasing order 
Beh2
HOPE IT CLEARS