Shapino, Hymin Research and Development Department, Ethyl Corporation, Baton Rouge, Louisiana.
Johnston, James D. Ethyl Corporation, Baton Rouge, Louisiana.
Last reviewed:May 2019
Show previous versions
- Links to Primary Literature
- Additional Readings
A chemical element, Pb, atomic number 82 and atomic weight 207.2. Lead is a soft bluish metal, which tarnishes to dull gray. It is ductile, malleable, easily fusible, and melts at 327.4°C (621.3°F). The normal chemical valences are 2 and 4. Lead is also a toxic heavy metal. Lead is relatively resistant to attack by sulfuric and hydrochloric acids but dissolves slowly in nitric acid. Lead forms many salts, oxides, and organometallic compounds. See also: Periodic table
The content above is only an excerpt.
for your institution. Subscribe
To learn more about subscribing to AccessScience, or to request a no-risk trial of this award-winning scientific reference for your institution, fill in your information and a member of our Sales Team will contact you as soon as possible.
to your librarian. Recommend
Let your librarian know about the award-winning gateway to the most trustworthy and accurate scientific information.
AccessScience provides the most accurate and trustworthy scientific information available.
Recognized as an award-winning gateway to scientific knowledge, AccessScience is an amazing online resource that contains high-quality reference material written specifically for students. Contributors include more than 9000 highly qualified scientists and 43 Nobel Prize winners.
MORE THAN 8500 articles and Research Reviews covering all major scientific disciplines and encompassing the McGraw-Hill Encyclopedia of Science & Technology and McGraw-Hill Yearbook of Science & Technology
115,000-PLUS definitions from the McGraw-Hill Dictionary of Scientific and Technical Terms
3000 biographies of notable scientific figures
MORE THAN 19,000 downloadable images and animations illustrating key topics
ENGAGING VIDEOS highlighting the life and work of award-winning scientists
SUGGESTIONS FOR FURTHER STUDY and additional readings to guide students to deeper understanding and research
LINKS TO CITABLE LITERATURE help students expand their knowledge using primary sources of information