View stunning SlideShares in full-screen with the new iOS app!Introducing SlideShare for AndroidExplore all your favorite topics in the SlideShare appGet the SlideShare app to Save for Later — even offline
View stunning SlideShares in full-screen with the new Android app!View stunning SlideShares in full-screen with the new iOS app!
Lead is an element with the atomic number 82, is in Group 14, Period 6 and is a metal. Lead is a soft, malleable metal considered to be one of the heavy metals. Lead has a bluish-white color when freshly cut, but turns to a dull greyish color when exposed to air.
It’s used in building construction, lead-acid batteries, bullets, weights, and is part of solder and radiation shields.
Lead has the highest atomic number of all stable elements.
Lead is a poisonous metal that can damage nervous connections (especially in young children) and cause blood and brain disorders.
In the Earth's crust, lead is rarely found as a pure metal, but rather as lead compounds such as lead sulfide, lead sulfate or lead oxide. These lead compounds often occur with silver.
Lead has no role in the human body and is quite toxic. In the 1970s, many American children suffered from lead poisoning through exposure to lead paints. Such paints are no longer produced in the United States.
The incidence of lead exposure through this source has gone down, except in older houses.