82 · Pb

Lead

Known since antiquity, with no discovery year.

Identity

Atomic number: 82
Symbol: Pb
Canonical name: Lead
Category: post-transition metal
Group: 14
Period: 6
Block: p
Other names: plumbum

Properties

These quantities come from the Periodic Table JSON compilation. They have not yet been checked, one by one, against CIAAW atomic weights or NIST measurements. A value marked estimated is not a measurement.

Atomic mass: 207.21 u
Electron configuration: [Xe] 4f14 5d10 6s2 6p2
Electrons per shell: 2, 8, 18, 32, 18, 4
Standard state: solid
Density: 11.34 g/cm³
Melting point: 600.61 K
Boiling point: 2,022 K
Electronegativity: 1.87 Pauling
First ionization energy: 715.6 kJ/mol
Electron affinity: 34.4204 kJ/mol

History

Antiquity

Lead was worked in antiquity. No discovery year can be assigned.

See the element timeline

Etymology

Theme: other
Language: latin
Root: plumbum
Meaning: lead

Sources

IUPAC, Periodic Table of the Elements
Bowserinator, Periodic Table JSON. Compilation secondaire d’où viennent les grandeurs physiques importées (masse, densité, températures, énergies). Elles ne sont pas revérifiées une à une auprès du NIST ou de la CIAAW.