Pb

Lead

Identification

CAS Number: 7439-92-1

Discoverer: Known to the ancients.

Properties

Atomic Mass: 207.2 →Density: 11.3 g/cm³ →

Crust Abundance: 14 mg/kg

Crystal Structure: FCC

Atomic Dimensions

Atomic Radius: 180 pm →

Atomic Radius (Rahm): 249.00000000000003 pm

Covalent Radius: 146 pm →

Van der Waals Radius: 202 pm

Metallic Radius: 150 pm

Atomic Volume: 18.3 cm³/mol

Lattice Constant: 4.95 Å

Thermodynamics

Melting Point: 600.65 K →Boiling Point: 2013 K →Specific Heat: 0.159 J/(g·K) →Thermal Conductivity: 35.3 W/(m·K) →Heat of Fusion: 4.77 kJ/mol →Heat of Vaporization: 177.8 kJ/mol →

Heat of Formation: 195.2 kJ/mol

Electronic Structure

Electron Config: [Xe] 4f14 5d10 6s2 6p2

Block: p

Period: 6 →Group: 14 →Electronegativity: 1.8 →Electron Affinity: 0.35674316 eV →

Oxidation States: +2, +4

Abundance & Geochemistry

Crust Abundance: 14 mg/kg

Sea Abundance: 0.000029999999999999997 mg/L

Goldschmidt Class: chalcophile

About

Heavy dull grey ductile metallic element, belongs to group 14. Used in building construction, lead-place accumulators, bullets and shot, and is part of solder, pewter, bearing metals, type metals and fusible alloys.

Isotopes

Pb-208 208 52.40%

Pb-206 206 24.10%

Pb-207 207 22.10%

Pb-204 204 1.40%