Lead is a chemical element with the symbol Pb and atomic number 82. It is a heavy metal that is soft, malleable, and ductile, with a bluish-white color when freshly cut. Lead has a relatively low melting point and is insoluble in water. It has been used for thousands of years in construction, batteries, and art due to its durability and ability to be easily shaped and molded. Lead has some toxic properties when ingested, inhaled, or absorbed through the skin, and therefore, its use has been restricted in many applications. Its use in gasoline, paint, and plumbing has been phased out due to its health effects. However, lead is still used in some industries, such as electronics, ammunition, and radiation shielding.
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