Why is lead a poor conductor of electricity?

While lead is classified as a metal, it is a poor conductor of electricity compared to many other metals.12

The electrical conductivity of a metal depends on both the number of free electrons available to carry a current and their mobility—the ease with which they move through the solid when influenced by an electric field. While lead possesses a close-packed metallic lattice, its specific atomic and electronic properties result in lower electron mobility compared to highly conductive metals like silver or copper.342

Additionally, the presence of impurities or irregularities within a metal's crystal structure can interfere with the movement of these free electrons, further reducing conductivity. Although lead is not an efficient conductor, its other physical properties—such as its high density, corrosion resistance, and ease of casting—make it highly useful for applications like storage batteries and protective shielding.3142