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QUESTION
Is Lithium hydride, ionic or covalent bonding?
Ionic Bonding
Lithium and hydrogen are bonded together through ionic bonding.
Lithium is a metal; during ionic bonding, lithium loses an electron to become the ion ##"Li"^(+)##. Hydrogen acquires an electron from lithium to become the ion ##"H":^(-)##.
When they react, they each share their single valence electron to make a bond between the two atoms. It is reasonably polar (##"EN"_"H" = 2.2##, ##"EN"_"Li" = 0.98##), which is why it is an ionic compound.
