The Periodicity of Hydrides in Groups 4 to 7

Hydride is the name given to any hydrogen compound. There are three types of hydrides: ionic hydrides, covalent hydrides and transitional metal hydrides. Ionic hydrides consist of hydrogen and an electropositive metal. The hydrogen atoms form ionic bonds with an electropositive metal by acquiring an electron from the metal to complete its S-shell. Covalent hydrides however consist of a covalent bond between hydrogen atoms and electronegative metals (generally groups 4-7). In transitional metal hydrides, the type of bonding varies between transition metals and the hydrogen atoms depending o…