Hydride

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

These are crystalline, high-melting-point solids. hydride

They often retain metallic properties like luster and conductivity. Interestingly, they are often "non-stoichiometric," meaning the ratio of hydrogen to metal isn't a fixed whole number (e.g., LaH2.87cap L a cap H sub 2.87 Hydrogen atoms occupy the small holes (interstices) in

A is a compound in which hydrogen is combined with another element. While we usually think of hydrogen as a positive ion ( H+cap H raised to the positive power they are often "non-stoichiometric

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

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

They are being heavily researched for hydrogen storage in fuel-cell vehicles because they can soak up and release hydrogen gas like a sponge.