Hydride

These are crystalline, high-melting-point solids.

They are generally grouped into three categories based on the type of chemical bond involved: 1. Ionic (Saline) Hydrides hydride

They are being heavily researched for hydrogen storage in fuel-cell vehicles because they can soak up and release hydrogen gas like a sponge. These are crystalline, high-melting-point solids

These are mostly gases or volatile liquids held together by shared electrons. Sub-types: These are crystalline

Hydrogen atoms occupy the small holes (interstices) in the metal's crystal lattice.

Formed when hydrogen reacts with highly reactive alkali metals (Group 1) or alkaline earth metals (Group 2, like Calcium).

), in many hydrides, it acts as the more electronegative partner, sometimes even forming a negative anion ( H−cap H raised to the negative power