What is the name of compounds formed from the reaction of hydrogen with an active metal?

The compounds formed from the reaction of hydrogen with an active metal are known as metallic hydrides. This occurs when active metals, which are highly reactive, such as alkali or alkaline earth metals, combine with hydrogen gas to create hydrides. These compounds typically consist of a metal bonded to hydrogen and can be represented by the general formula MHx, where M is the metal and x represents the number of hydrogen atoms bonded to it.

Metallic hydrides exhibit distinct properties, including the ability to release hydrogen gas upon heating or reaction with water. They play important roles in various industrial applications, including hydrogen storage and fuel cells. Understanding metallic hydrides thus highlights the interaction between hydrogen and metals, emphasizing the nature of both elements involved in the reaction.