Knowra Lead Lead Lead is a dense, soft, malleable metal with atomic number 82 and symbol Pb. Its widespread historical uses are limited today by its toxicity and environmental persistence.
Lead(II) oxide : Lead(II) oxide is an inorganic compound of lead and oxygen, used in glass, ceramics, and batteries. It forms when lead oxidizes and serves as a major industrial lead compound.
Lead shielding : Lead shielding is the use of lead barriers to reduce exposure to X-rays and gamma rays. Lead’s high density makes it effective at attenuating penetrating radiation.
Roman lead plumbing : Roman lead plumbing used lead pipes and fittings to distribute water in parts of the Roman world. It illustrates an early large-scale use whose health consequences remain debated.
Childhood lead exposure : Childhood lead exposure is contact with lead during infancy or childhood, when developing systems are especially vulnerable. Even low exposure can impair cognition and behavior during development.
Tin : Tin is a soft, malleable metal with atomic number 50 and symbol Sn. Tin often replaces lead in solder and coatings, though its properties differ.
Lead-acid battery : A rechargeable battery that stores energy through reversible reactions involving lead, lead dioxide, and sulfuric acid. Its electrodes exploit lead’s reversible conversion between metallic and oxidized forms.
Lead glass : Lead glass is glass containing lead oxide, which raises its refractive index and density. Lead compounds modify glass optics and can add radiation shielding.
Lead poisoning in ancient Rome : Lead poisoning in ancient Rome is the proposed contribution of lead exposure to illness among Romans. Lead vessels, pipes, and sweeteners prompted hypotheses about ancient exposure.
Lead abatement : Lead abatement is the reduction or removal of lead hazards from buildings, soil, or other environments. It addresses persistent contamination left by paint, plumbing, and industrial activity.
Bismuth : Bismuth is a brittle, dense post-transition metal with atomic number 83 and symbol Bi. It is a less toxic heavy-metal substitute in some applications.
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