What is the atomic number of a lead atom?

Since this is not my area of expertise, I searched Google under the key words "lead atomic number" to get these possible sources:

http://www.chemicalelements.com/elements/pb.html
http://physics.nist.gov/PhysRefData/Handbook/Tables/leadtable1.htm
http://education.jlab.org/itselemental/ele082.html

In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search.

I hope this helps. Thanks for asking.

The atomic number of a lead atom is 82. The atomic number represents the number of protons in the nucleus of an atom and determines its identity as a specific element. In this case, lead has 82 protons, which gives it an atomic number of 82.