lead, Metallic chemical element, chemical symbol Pb, atomic number 82. Lead is a soft, silvery white or grayish, malleable, ductile, dense metal that conducts electricity poorly. Its stable isotope s are all end products of radioactive decay of uranium and other heavy elements. Known since ancient times, lead is so durable and resistant to ...

Lead is a harmful heavy metal Lead is a naturally occurring metal. Its chemical and physical characteristics, such as its malleability, low melting point and resistance to corrosion, make it amenable to a range of uses. Lead is also highly toxic to humans and the environment. It is a cumulative toxicant particularly hazardous to young children and …

Lead has an atomic number of 82 and an atomic weight of 207.2. It is a bluish-grey metal that tarnishes easily in air to a dark grey. The density of lead is 11.34 g/cm3. It has a low melting point of 327.46 °C or 621.43 °F. Naturally occurring lead ores comprise 0.002% (15g/t) of the earth's crust.

What is Lead? Answer: Lead is a toxic metal that was used for many years in products found in and around our homes. Lead also can be emitted into the air from motor vehicles and industrial sources, and lead can enter drinking water from plumbing materials. Lead-based paint is present in many homes built before 1978. The federal government ...

Lead between the lines. Nature Chemistry 5, 894 ( 2013) Cite this article. Somobrata Acharya explores the history, properties and uses of lead — an ancient metal that is still very relevant to ...

Facts About Lead. Lead is an incredibly useful metal, but it is also toxic to humans. In fact, if we didn't have to worry about breathing in its dust or ingesting its particles, lead would be in ...

lead. materials processing. lead processing, preparation of the ore for use in various products. Lead (Pb) is one of the oldest metals known, being one of seven metals used in the ancient world (the others are gold, silver, copper, iron, tin, and mercury). Its low melting point of 327 °C (621 °F), coupled with its easy castability and ...

Lead, the "useful metal," was the pride of the Romans. For the last 5,000 years, it was used in products ranging from water pipes and makeup to wine — until we discovered how poisonous it is.

Chemical Properties of Lead. Lead compounds have two distinct oxidation states: +4 and +2. It disintegrates slowly in water and most cold acids. Lead metal is resistant to phosphoric and sulfuric acids, but it is vulnerable to nitric acid (HNO 3) and hydrochloric acids.; It does not easily react with oxygen in the air and does not burn.

Lead. Lead (element #82, symbol Pb) is a very soft, blue-gray, metallic element. It is primarily produced from the mineral galena. It has been used since antiquity. Water pipes in ancient Rome, some of which still carry water, were made of lead. The English words plumber and plumbing are derived from the Latin word for lead — plumbum — the ...

Here are encompassing uses of this versatile metal: Batteries: This is where lead is most importantly used, in the form of batteries in the automobile industry. Ammunition: Lead is an important …

Lead (Pb), is a sloppy, glittering white or greyish metal in group 14 of the periodic table. It is the worst leader of electricity. Lead is ductile, pliable, and dense. It is trusted by the alchemist to be the age of metals. It is a highly long-lasting element. Pb (plumbum) is the short form of the Latin word 'Lead'.

Lead is a chemical element in the periodic table's group-14 metals, with the symbol Pb and atomic number 82. It's now utilized to make storage batteries and an anti-knock compound (lead tetraethyl) for pollution management. Its density is 11.34g/cm3 and is found in a cubic close-packed crystal structure. Lead's low melting point indicates ...

Four distinct grades have been included in the REACH Registration for lead metal (EC: 231-100-4). Substance identity details and classification and labelling information can be found below: Lead metal massives (general grade) Lead metal massives (high purity grade) Lead metal massive (with arsenic) Lead metal powder; Uses of lead metal

Lead is an element, one of the basic chemical building blocks found in nature. A bluish-white metal, lead occurs naturally in harmless trace amounts in soil, rocks and water. A few centuries of mining and smelting changed this natural distribution so that toxic amounts of lead are now clustered near current and former lead plants and mines.

Element Name: Lead. Element Symbol: Pb. Atomic Number: 82. Atomic Weight: 207.2. Element Category: Basic Metal or Post-Transition Metal. Appearance: Lead is a metallic gray solid at room temperature. Electron Configuration: [Xe] 4f14 5d10 6s2 6p2. Oxidation State: The most common oxidation state is 2+, followed by 4+.

History and Discovery. Lead is a prehistoric metal and was used by people of ancient Rome and Western Asia around 7000 BCE. It was widely used to make water pipes by the Romans and named it as plumbum nigrum (black lead). The use of lead decreased with the fall of the Roman Umpire.

Chemical Lead. Antimonial Lead. Arsenic Lead. Lead Calcium. Lead-Based Babbitt Metal. Linotype Alloy. Conclusion. Lead metal has been utilized for thousands of years due to its malleability, low …

National Institute ofEnvironmental Health Sciences. Lead, a metal found throughout the earth, has been used in a variety of products including gasoline, paint, plumbing pipes, ceramics, solders, batteries, and even cosmetics. It remains a significant public health concern for some children because of persistent lead hazards in the environment.

Lead is a naturally occurring toxic metal found in the Earth's crust. Its widespread use has resulted in extensive environmental contamination, human exposure and significant public health problems in many parts of the world. Important sources of environmental contamination come from mining, smelting, manufacturing and recycling …

3. Lead: ( Types of Metals ) Lead could be a soft, heavy, malleable metal with a comparatively lower melting point and low enduringness. It will face up to corrosion from wet and plenty of acids. Lead is wide utilized in power cables, batteries, building construction and fastening. 4. Zinc: ( Types of Metals )

FAMILY. Group 14 (IVA) Carbon. PRONUNCIATION. LED. Throughout history, Lead has been used to make water and sewer pipes; roofing; cable coverings; type metal and other alloys; paints; wrappings for food, …

Lead is a chemical element with Pb as its symbol. It belongs to group 14 of the periodic table and its atomic number is 82. Lead has been in use for centuries. It is usually found in the ores of silver, zinc, and copper. This metal is soft, dense, and ductile, and is known to be malleable and corrosion resistant.

Lead was one of the first metals used by humans and consequently, the cause of the first recorded occupational disease (lead colic in a 4th century BC metal worker). In 2018, U.S. production of lead was estimated at 1.3 million metric tons; primarily from secondary refining of scrap metal (lead-acid batteries) and 10 mines mostly in Alaska and ...

Lead alloys are still used in some bullets and, due to the metal's low melting point, in metal solders. Lead glass has special applications in camera lenses and optical instruments, while lead …

A small percentage of lead is used to make lead compounds. Although the amount of lead is small, the variety of uses for these compounds is large. Some examples of important lead compounds are: lead acetate (Pb (C 2 H 3 O 2 ) 2 ): insecticides; waterproofing; varnishes; dyeing of cloth; production of gold; hair dye.

Nuclear properties. Lead is formed both by neutron-absorption processes and the decay of radionuclides of heavier elements. Lead has four stable isotopes; their relative abundances are lead-204, 1.48 percent; lead-206, 23.6 percent; lead-207, 22.6 percent; and lead-208, 52.3 percent.Three stable lead nuclides are the end products of radioactive decay in the …

Lead is also a vital constituent of today's electronic components, solders, batteries, photovoltaics, and metal alloys. Here we provide some perspectives about past, present, and future use of ...

Carbon Steel. This is the basic steel, good 'ol carbon and iron, although some other very small amounts of other elements might be added. The three general categories are low, medium, and high carbon steel. More carbon means harder and stronger. Less carbon means cheaper, softer, and easier to produce.

Terne metal, an alloy of lead and typically 10 to 15 percent tin, is used to coat steel sheet in order to produce a strong, corrosion-resistant product that is widely used for automobile gasoline tanks, packaging, roofing, and other uses where lead's favourable properties are sought but a reduced total weight is desired.