The main property of metals in the periodic table is their tendency to conduct electricity and heat efficiently. Metals typically possess high thermal and electrical conductivity due to the presence of free-moving electrons. Additionally, they generally exhibit malleability (ability to be shaped) and ductility (ability to be drawn into wires), which are characteristic physical properties. Metals are also lustrous, exhibiting a shiny appearance, and are usually solid at room temperature, contributing significantly to various industrial applications.