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Lead , Lead
Lead is in column IVA of the periodic table . It has four naturally occurring stable isotopes, lead-204, lead-206, lead-207, and lead-208. The l… Red Lead , red lead • n. a red form of lead oxide used as a pigment. Lead Poisoning , Lead is an indestructible heavy metal that can accumulate and linger in the body. Although the problem of lead exposure has been reduced in the Unite… Periodic Table of the Elements Lead , lead (symbol Pb) Metallic element of group IV of the periodic table, known from ancient times. Its chief ore is galena (lead sulphide), from which le… leading , leading •scaffolding •freestanding, hardstanding, landing, misunderstanding, notwithstanding, outstanding, standing, stranding, understanding, upstan… galena , galena Mineral, PbS; sp. gr. 7.4–7.6; hardness 2.5; cubic; lead-grey; lead-grey streak; metallic lustre; crystals cubes or octahedra, and often octah…
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