Here's why:

* State of matter: Hydrogen exists as a gas at room temperature and pressure. Malleability is a property of solids, referring to their ability to be hammered or pressed into different shapes without breaking.

* Bonding: Hydrogen exists as diatomic molecules (H₂). These molecules are held together by strong covalent bonds, which are very difficult to break.

However, under extreme conditions:

* At extremely high pressures, hydrogen can become a metallic solid. In this state, it could potentially exhibit some degree of malleability. However, these conditions are not commonly encountered.

Therefore, under normal circumstances, hydrogen is not malleable.