Weblead (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 water pipes …

WebLead is a chemical element with the symbol Pb (from the Latin plumbum) and atomic number 82. It is a heavy metal that is denser than most common materials. Lead is soft and malleable, and also has a relatively low melting point. When freshly cut, lead is a shiny gray with a hint of blue. It tarnishes to a dull gray color when exposed to air.

Weblead: [verb] to guide on a way especially by going in advance. to direct on a course or in a direction. to serve as a channel for.

Weblead definition: 1. to control a group of people, a country, or a situation: 2. (especially in sports or other…. Learn more.

Web31 thg 8, 2022 · Lead is a cumulative toxicant that affects multiple body systems and is particularly harmful to young children. Lead in the body is distributed to the brain, liver, kidney and bones. It is stored in the teeth and bones, where it accumulates over time. Human exposure is usually assessed through the measurement of lead in blood.

WebLead definition, to go before or with to show the way; conduct or escort: to lead a group on a cross-country hike. See more.

WebProperties of Lead. Lead (Pb) is a white lustrous metal with a soft texture and is highly malleable. The metal is highly corrosion-resistant, in addition to not being a poor conductor of electricity. The metal in its powdered form produces a bluish-white flame when burnt in the air. Once mixed with fluorine at room temperature forms lead fluoride.

WebLEAD Student Development System creates bright future ready confident students. Students need confidence to succeed in life, and we firmly believe a school has a crucial role to play here. Our meticulously planned school system builds 5 key skills in our students - Conceptual Understanding, Thinking Skills, Collaboration Skills, Communication ...

WebLead poisoning, also known as plumbism and saturnism, is a type of metal poisoning caused by lead in the body. The brain is the most sensitive. Symptoms may include abdominal pain, constipation, headaches, irritability, memory problems, infertility, and tingling in the hands and feet. It causes almost 10% of intellectual disability of otherwise …

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