The metal element is a category of chemical elements characterized by their ability to conduct electricity and heat, as well as their malleability and ductility. Metals are typically solid at room temperature, with the exception of mercury, which is a liquid. Common examples of metals include iron, copper, and aluminum, each playing vital roles in various industries and everyday applications. Metals are found on the left side and in the center of the periodic table. They can be classified into different groups, such as alkali metals, alkaline earth metals, and transition metals. These elements often form positive ions and are known for their shiny appearance and high density.