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Lead ( ) is a main-group element with symbol Pb ( ) and atomic number 82. Lead is a soft, malleable poor metal, also considered to be one of the heavy metals. Lead has a bluish-white color when freshly cut, but tarnishes to a dull grayish color when exposed to air. It has a shiny chrome-silver luster when melted into a liquid.

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Blogs for Lead

Leading Blog: A Leadership Blog @ LeadershipNow

When they have to lead partners and peers who have ... 5 Leadership Lessons: Ultimate Leadership - Leading in Context. How to Hit the ... Blog ...www.leadershipnow.com/leadingblog/index.html

LEAD News

LEAD News. Content Management Tool for LEAD Portal. Blog. About. Help. Register. Login " Older Newer " ... LEAD Demonstrations & Talks at SuperComputing 2008 ...lead.ou.edu/blog

B2B Lead Generation Blog

Brian Carroll's Blog focused on B2B lead generation, sales leads, and marketing for the complex sale. ... Tags: blog, facebook, lead generation, linkedin, ...blog.startwithalead.com/

Leading Blog: A Leadership Blog @ LeadershipNow: The Importance of ...

... existing organization, team or culture and then having to lead who was present. ... aligning, developing, inspiring, and leading. ... Blog Profile for m2com ...www.leadershipnow.com/leadingblog/2007/07/the_importance_of_...

LEADCRITIC | Mortgage Leads News and Opinions

Lead Critic is the hub for all discussions concerning mortgage leads, Lead ... The Lead Critic blog and Forum was created to give lead buyers a place to ...blog.leadcritic.com/

Wikipedia About Lead

Lead ( ) is a main-group element with symbol Pb ( ) and atomic number 82. Lead is a soft, malleable poor metal, also considered to be one of the heavy metals. Lead has a bluish-white color when freshly cut, but tarnishes to a dull grayish color when exposed to air. It has a shiny chrome-silver luster when melted into a liquid.

Lead is used in building construction, lead-acid batteries, bullets and shot, weights, and is part of solder, pewter, fusible alloys and radiation shields. Lead has the highest atomic number of all stable elements, although the next element, bismuth, has a half-life so long (longer than the estimated age of the universe) it can be considered stable. Like mercury, another heavy metal, lead is a potent neurotoxin that accumulates in soft tissues and bone over time. Lead poisoning was documented in ancient Rome, Greece, and China.

Characteristics

Lead has a dull luster and is a dense, ductile, very soft, highly malleable, bluish-white metal that has poor electrical conductivity. This true metal is highly resistant to corrosion, and because of this property, it is used to contain corrosive liquids (e.g., sulfuric acid). Because lead is very malleable and resistant to corrosion it is extensively used in building construction, e.g., external coverings of roofing joints. Lead can be toughened by adding a small amount of antimony or other metals to it. It is a common misconceptionFact: date=March 2009

History

Lead has been commonly used for thousands of years because it is widespread, easy to extract and easy to work with. It is highly malleable and ductile as well as easy to smelt. Metallic lead beads dating back to 6400 B.C. have been found in Çatalhöyük in modern-day Turkey. In the early Bronze Age, lead was used with antimony and arsenic. Lead is mentioned in the Book of Exodus (15:10).

In alchemy, lead was thought to be the oldest metal and was associated with the planet Saturn. Lead pipes that bear the insignia of Roman emperors are still in serviceFact: date=March 2009 and many Roman "pigs" (ingots) of lead figure in Derbyshire lead mining history and in the history of the industry in other English centres. The Romans also used lead in molten form to secure iron pins that held together large limestone blocks in certain monumental buildings. Lead's symbol Pb is an abbreviation of its Latin name plumbum for soft metals; originally it was plumbum nigrum (literally, "black plumbum"), where plumbum candidum (literally, "bright plumbum") was tin. The English words "plumbing," "plumber," "plumb" and "plumb-bob" also derive from this Latin root.

Occurrence

Metallic lead does occur in nature, but it is rare. Lead is usually found in ore with zinc, silver and (most abundantly) copper, and is extracted together with these metals. The main lead mineral is galena (PbS), which contains 86.6% lead. Other common varieties are cerussite (PbCO3) and anglesite (PbSO4).

Search results for Lead

Lead

Lead is a shiny, blue-white soft metal when its surface is fresh. ... Otherwise, lead would react rapidly with the oxygen and carbon dioxide in the air. ...mysite.du.edu/~jcalvert/phys/lead.htm

Lead poisoning - Wikipedia, the free encyclopedia

Lead poisoning (also known as saturnism, plumbism, Devon colic, or painter's ... Lead may cause irreversible neurological damage ... Lead was used in makeup. ...en.wikipedia.org/wiki/Lead_poisoning

Lead

Properties, forms, uses, and handling. ... Lead is a bluish-white metal of bright luster. ... very resistant to corrosion; lead pipes bearing the insignia of ...periodic.lanl.gov/elements/82.html

lead definition | Dictionary.com

Definition of lead at Dictionary.com with free online dictionary, pronunciation, ... when was lead first... common uses of lead. what year was the e... atomic ...dictionary.reference.com/browse/lead

It's Elemental - The Element Lead

The Element Lead - Basic Physical and ... Lead is a soft, malleable and corrosion ... Lead's high density makes it useful as a shield against ...education.jlab.org/itselemental/ele082.html

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News about Lead

Scamming 'Robocalls' Lead to Lawsuits

ABC NewsComplaints over annoying robocalls lead to state lawsuits, federal investigationhttp://abcnews.go.com/Business/story?id=7542747&page=1

Red Wings Beat Ducks 4-1, Taking 3-2 Series Lead

ABC NewsDefending Stanley Cup champion Red Wings beat Ducks 4-1, take 3-2 lead in West semishttp://abcnews.go.com/Sports/wireStory?id=7553015

KCRC sets guidance on $500-750 mln bond-lead

Reuters via Yahoo! Asia NewsLONDON, May 11 (Reuters) - Hong Kong rail operator Kowloon-Canton Railway Corp (KCRC) has set yield guidance of between 195 and 205 basis points over Treasuries on a $500-750 million 10-year bond, an official at one of the lead managers said on Monday.http://asia.news.yahoo.com/rtrs/20090511/tbs-kcrc-bond-73189...

Ube Media holds on to Padyak Pinoy team lead

GMA NewsDespite finishing only sixth in Monday"s 73-kilometer team time trial race from Dagupan City to San Fernando, La Union, Team Ube Media retained the overall team classification lead after Stage 4 of the Padyak Pinoy 2009: Tour of Champions.http://www.gmanews.tv/story/160790/Ube-Media-holds-on-to-Pad...

Wings take care of Ducks for 3-2 lead in series

Fox SportsJohan Franzen, Jiri Hudler, Darren Helm and Henrik Zetterberg scored, helping the Detroit Red Wings beat the Anaheim Ducks 4-1 on Sunday. The defending Stanley Cup champions' dominating performance gave them a 3-2 lead in the Western Conference semifinal series.http://msn.foxsports.com/nhl/story/9559342/Wings-take-care-o...

News about Lead

Hacking of Rx Database Could Lead to Headaches

Top Tech NewsThe database contains records of every prescription dispensed by Virginia pharmacies of certain drugs with a high potential for abuse, such as OxyContin, Vicodin and Ambien. Until it was shut down in the wake of the hacker attack, the system allowed ... http://www.toptechnews.com/story.xhtml?story_id=023002T7EQJK

Crouch to lead strategic development for QinetiQ North America

Washington TechnologyQinetiQ North America has named J.D. Crouch II executive vice president for strategic development, focusing on mission-critical technology, security services, intelligence and counter intelligence, and systems engineering solutions for the federal ... http://washingtontechnology.com/articles/2009/05/11/crouch-t...

Maoist ambush kills 13 in Chhattisgarh (Fourth Lead)

Thaindian.comRaipur, May 11 (IANS) Twelve policemen and a civilian were killed and six injured after 150 heavily armed Maoist guerrillas ambushed a 41-member police force, an official said Monday. The attack on the District Force (DF) search convoy took place in ... http://www.thaindian.com/newsportal/uncategorized/maoist-amb...

Analysts: EADS Q1 net seen down 30 percent

CNBCOn top of the recession, EADS is also struggling to regain control of its A400M program, which the company said could lead to a "significant charge" this year. BY THE NUMBERS: In 2008, net profit in the fourth quarter rose 89 percent to euro490 ... http://www.cnbc.com/id/30683338

itravel2000: Which Destination Has the Early Lead in Bookings Since ...

Market WireTORONTO, ONTARIO--(Marketwire - May 11, 2009) - With the H1N1 outbreak, many people have changed travel plans and decided to relocate their vacations to Cuba. According to Stuart Morris, VP of Marketing at itravel2000, the company has seen a 29 ... http://www.marketwire.com/press-release/Itravel2000-987310.h...

Search results for Lead

lead - Definition of lead at YourDictionary.com

transitive verb led, leading lead′·ing. to show the way to, or direct the course of, by going before or along with; conduct; guide; to show (the way) in this mannerhttp://www.yourdictionary.com/lead

Lead - LoveToKnow 1911

Medical warning! This article is from the 1911 Encyclopaedia Britannica. Medical science has made many leaps forward since it has been written.http://www.1911encyclopedia.org/Lead

lead: Definition from Answers.com

lead n. ( Symbol Pb ) A soft, malleable, ductile, bluish-white, dense metallic element, extracted chiefly from galena and used in containers andhttp://www.answers.com/topic/lead-10

CDC - Lead - Home

Childhood Lead Poisoning. Approximately 310,000 U.S. children aged 1-5 years have blood lead levels greater than 10 micrograms of lead per deciliter of blood, the level at which ... http://www.cdc.gov/lead/

lead - OneLook Dictionary Search

Quick definitions (lead) ▸ noun: the playing of a card to start a trick in bridge ("The lead was in the dummy") ▸ noun: a position of leadership (especially in the phrase `take ... http://www.onelook.com/?loc=pub&w=lead

Wikipedia results for Lead

Lead - Wikipedia, the free encyclopedia

Lead (pronounced /ˈlɛd/) is a main-group element with symbol Pb (Latin: plumbum) and atomic number 82. Lead is a soft, malleable poor metal, also considered to be one of the ... http://en.wikipedia.org/wiki/Lead

Lead poisoning - Wikipedia, the free encyclopedia

Lead poisoning (also known as saturnism, plumbism, Devon colic, or painter's colic) is a medical condition caused by increased levels of the metal lead in the blood.http://en.wikipedia.org/wiki/Lead_poisoning

Lead paint - Wikipedia, the free encyclopedia

Lead paint is paint containing lead, a heavy metal, that is used as pigment, with lead(II) chromate (Pb Cr O 4, "chrome yellow") and lead(II) carbonate (Pb C O 3, "white lead ... http://en.wikipedia.org/wiki/Lead_paint

Lead-acid battery - Wikipedia, the free encyclopedia

Lead-acid batteries, invented in 1859 by French physicist Gaston Planté, are the oldest type of rechargeable battery. Despite having the second lowest energy-to-weight ratio (next ... http://en.wikipedia.org/wiki/Lead_battery

Lead(II) nitrate - Wikipedia, the free encyclopedia

Lead(II) nitrate is an inorganic compound with the chemical formula Pb (NO 3) 2. It commonly occurs as a colourless crystal or white powder and, unlike most other lead(II) salts ... http://en.wikipedia.org/wiki/Lead_nitrate
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Videos found for Lead

Storms lead to traffic problems

Storms lead to traffic problemsAs a second major snowstorm hits the UK, the lack of rock salt has led to transport chaos. ITN's Tom Clarke reports.Windows Media - Video

Binky Chadha Says Financials to Lea...

Binky Chadha Says Financials to Lead Recovery in StocksBinky Chadha, chief U.S. equity strategist for Deutsche Bank AG, talks with Bloomberg's Betty Liu about the role of financial stocks in an equity market recovery.Windows Media - Video

Philanthropists Lead Charge To Help...

Philanthropists Lead Charge To Help HospitalIn this economy, it's hard for many of us to think about giving when we're worried about our own financial realities. Leaders at University of Colorado Hospital will tell you that...Windows Media - Video

Nelson, Howard Lead Magic To Win

Nelson, Howard Lead Magic To WinMagic top Raptors, for NBA-best 18th road winFlash - Video

Gregg to lead Commerce

Gregg to lead CommercePresident Obama has nominated Sen. Judd Gregg as secretary of the Commerce Department.Windows Media - Video

Answers for Lead

ThienLead ??!!!?ThienIt depends what type of pencil lead it is. If it is the old fashion lead made back in the early 90s, then youll get lead poisoning. If its more recent lead, which it probably is, I do not think anyt...KnottedBrainCan lead stop the penetration of electromagnetic radiation?KnottedBrainYou've got it backwards, X-rays, ultraviolet, visible light, radio waves, etc. are all electromagnetic. It is the electromagnetic spectrum. http://en.wikipedia.org/wiki/Electromagnetic_spectrum T...srsly?How is lead getting into various consumer products?srsly?Lead is used in the manufacturing of allot of things, it's also used to make molds for products. Like sand molds are used in foundryis for pouring hot liquid iron to make a casting, lead is used as a...alessandra.How is lead poisonous to human beings and what are the symptoms of lead posoning?alessandra.Lead (pronounced /ˈlɛd/) is a chemical element with the symbol Pb (Latin: plumbum) and atomic number 82. A soft, heavy, toxic and malleable poor metal, lead is bluish white when freshly cut, but tar...abigayle laCan smoking lead one to become an alcohol dependent and lead to the necessity of addiction treatment?abigayle laActually, smoking and alcohol consumption are indeed interrelated. Nicotine intake increases a person's alcohol craving, whereas alcohol drinking boosts the effects of smoking. This explains why smoke...
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