Is Pb Lead(atomic weight is 82)?

No, the atomic number of Pb is 82 (that's number of protons in the nucleus). The atomic weight Pb is 207.2.

Thanks.

Yes, Pb is the chemical symbol for lead, and its atomic weight is 82. The atomic weight is a measure of the average mass of an atom of an element, taking into account the different isotopes and their abundance. In the case of lead, it has several isotopes that contribute to its atomic weight, with the most common being lead-208, lead-206, and lead-207. The atomic weight of 82 represents the weighted average mass of all the isotopes of lead.