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
When they react with water, they release hydrogen gas and form a base. Example: Sodium hydride ( NaHcap N a cap H ), often used in organic chemistry as a powerful base. 2. Covalent (Molecular) Hydrides hydride
They are generally grouped into three categories based on the type of chemical bond involved: 1. Ionic (Saline) Hydrides They often retain metallic properties like luster and
Hydrogen atoms occupy the small holes (interstices) in the metal's crystal lattice. they are often "non-stoichiometric
Formed by many transition metals (d-block and f-block elements).