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www.chemicalelements.com/elements/pb.html

Atomic Number Atomic Mass Electron Configuration Number of Neutrons Melting Point Boiling Point Date of Discovery Crystal Structure. Element Groups: Alkali Metals Alkaline Earth Metals ... Name: Lead Symbol: Pb Atomic Number: 82 Atomic Mass: 207.2 amu Melting Point: 327.5 °C (600.65 K, 621.5 °F)

hobart.k12.in.us/ksms/PeriodicTable/lead.htm

Lead hydrogen arsenate (PbHAsO 4) Lead iodide (PbI 2) Lead nitrate [Pb(NO 3) 2] Lead oxide (PbO 2) Lead selenide (PbSe) Lead sulfate (PbSO 4) Lead sulfide (PbS) Lead telluride (PbTe) Interesting facts: It does not occur in nature in large amounts. It is usually found in zinc, silver and copper ores. Galena contains about 86.6% of lead.

www.nuclear-power.net/Lead-atomic-number-mass-density

Atomic Number of Lead. Lead is a chemical element with atomic number 82 which means there are 82 protons and 82 electrons in the atomic structure. The chemical symbol for Lead is Pb.. Atomic Mass of Lead. Atomic mass of Lead is 207.2 u. Note that, each element may contain more isotopes, therefore this resulting atomic mass is calculated from naturally-occuring isotopes and their abundance.

www.diarystore.com/education/lead-element-periodic-table...

Lead is the chemical element and it is a member of group 14 and period 6 in the periodic table. Atomic number of Lead is 82 and is indicated by symbol Pb. Lead is the heaviest member of the carbon family. It is a soft and silvery white and greyish metal. Lead occurs rarely in its native metallic form. Pb is generally found combined with sulphur ...

www.answers.com/Q/What_is_the_atomic_mass_of_lead

Lead's atomic mass is 207.2 Its atomic number is 82. From the New World Encyclopedia, "Technically, atomic mass is equal to the total mass of protons, neutrons, and electrons in the atom (when the ...

physics.nist.gov/PhysRefData/Handbook/Tables/leadtable1.htm

Isotope : Mass : Abundance : Spin : Mag Moment : 204 Pb: 203.973020: 1.4%: 0 : 206 Pb: 205.974440: 24.1%: 0 : 207 Pb: 206.975872: 22.1%: 1/2 +0.5926: 208 Pb: 207 ...

www.rsc.org/periodic-table/element/82

Density is the mass of a substance that would fill 1 cm 3 at room temperature. Relative atomic mass The mass of an atom relative to that of carbon-12. This is approximately the sum of the number of protons and neutrons in the nucleus. Where more than one isotope exists, the value given is the abundance weighted average. Isotopes

en.wikipedia.org/wiki/Atomic_mass

The atomic mass (m a) is the mass of an atom.Its unit is the unified atomic mass units (abbr. u) where 1 unified atomic mass unit is defined as 1 ⁄ 12 of the mass of a single carbon-12 atom, at rest. For atoms, the protons and neutrons of the nucleus account for nearly all of the total mass, and the atomic mass measured in u has nearly the same value as the mass number.

en.wikipedia.org/wiki/Lead

Natural lead consists of four stable isotopes with mass numbers of 204, 206, 207, and 208, and traces of five short-lived radioisotopes. The high number of isotopes is consistent with lead's atomic number being even. Lead has a magic number of protons (82), for which the nuclear shell model accurately predicts an especially stable nucleus.

www.thoughtco.com/atomic-mass-and-mass-number-606105

Be careful you don't confuse atomic number and mass number. While the mass number is the sum of the protons and neutrons in an atom, the atomic number is only the number of protons. The atomic number is the value found associated with an element on the periodic table because it is the key to the element's identity.