Lead (/ lɛd /) is a chemical element; it has symbol Pb (from Latin plumbum) and atomic number 82. It is a heavy metal that is denser than most common materials. Lead is soft and malleable, …

铅（ 拼音： qiān ，注音： ㄑㄧㄢ ，粤拼： jyun4 ；英語： Lead ），是一種化學元素，其化學符號为Pb [3] （源于拉丁語： Plumbum ），原子序數为82，原子量為 207.2 u 。铅是比大多數常見材料密度更高的重金屬。它是柔軟、可鍛鑄、熔點较低的金属。

铅是一种金属化学元素，元素符号Pb，原子序数为82，原子量为207.2，是原子量最大的非放射性元素。 金属铅为面心立方晶体。 金属铅是一种耐蚀的重有色金属材料，铅具有熔点低、耐蚀性高、X射线和γ射线等不易穿透、塑性好等优点，常被加工成板材和管材 ...

2025年2月14日 · lead (Pb), a soft, silvery white or grayish metal in Group 14 (IVa) of the periodic table. Lead is very malleable , ductile, and dense and is a poor conductor of electricity. Known in antiquity and believed by the alchemists to be the oldest of metals, lead is highly durable and resistant to corrosion , as is indicated by the continuing use of ...

Lead is a chemical element with symbol Pb and atomic number 82. Classified as a post-transition metal, Lead is a solid at room temperature. [Xe]6s 2 4f 14 5d 10 6p 2. J.C. Slater, J Chem Phys, 1964, 41 (10), 3199-3205. DOI:10.1063/1.1725697.

2025年2月5日 · Lead consists of Four naturally occurring isotopes: 204 Pb, 206 Pb, 207 Pb and 208 Pb. Lead has an atomic number of 82 and is a grey metal. It has a melting point of 327.46 °C (621.43 °F) and a boiling point of 1749 °C (3180 °F). Pb has a solid phase density of 11.34 g/cm 3 and a liquid or molten phase density of 10.66 g/cm 3.

Exposure to lead (Pb) from environmental sources remains an overlooked and serious public health risk. Starting in childhood, Pb in the skeleton can disrupt epiphyseal plate function, constrain the growth of long bones, and prevent attainment of a high peak bone mass, all of which will increase susceptibility to osteoporosis later in life.

2025年1月21日 · Lead is a dense, soft, and malleable metal with the symbol Pb (from the Latin plumbum) and atomic number 82. Historically used in a range of applications, Lead is known for its low melting point, high density, and resistance to corrosion. However, its use has decreased due to health concerns, as Lead exposure can be harmful.

2012年12月9日 · The principal lead mineral is lead sulfide (galena, PbS). Other common minerals are cerussite (lead carbonate, PbCO 3) and anglesite (lead sulfate, PbSO 4). Lead is refined from galena (PbS) by heating. A large amount of lead is also …

11 小时之前 · Uniform Pb nanoparticles are deposited on the CF at a constant potential of −0.65 V for 30 s to produce sufficient zincophilic nucleation sites (Fig. 1d, e), which facilitates uniform Zn deposition.