Cd

Cadmium

Identification

CAS Number: 7440-43-9

Discovery Year: 1817

Discoverer: Fredrich Stromeyer

Discovery Location: Germany

Properties

Atomic Mass: 112.414 →Density: 8.69 g/cm³ →

Crust Abundance: 0.15 mg/kg

Crystal Structure: HEX

Atomic Dimensions

Atomic Radius: 155 pm →

Atomic Radius (Rahm): 238 pm

Covalent Radius: 144 pm →

Van der Waals Radius: 218.00000000000003 pm

Metallic Radius: 138 pm

Atomic Volume: 13.1 cm³/mol

Lattice Constant: 2.98 Å

Thermodynamics

Melting Point: 594.1 K →Boiling Point: 1038 K →Specific Heat: 0.232 J/(g·K) →Thermal Conductivity: 96.9 W/(m·K) →Heat of Fusion: 6.11 kJ/mol →Heat of Vaporization: 59.1 kJ/mol →

Heat of Formation: 111.8 kJ/mol

Electronic Structure

Electron Config: [Kr] 4d10 5s2

Block: d

Period: 5 →Group: 12 →Electronegativity: 1.69 →

Oxidation States: +2

Abundance & Geochemistry

Crust Abundance: 0.15 mg/kg

Sea Abundance: 0.00011 mg/L

Goldschmidt Class: chalcophile

About

Soft bluish metal belonging to group 12 of the periodic table. Extremely toxic even in low concentrations. Chemically similar to zinc, but lends itself to more complex compounds. Discovered in 1817 by F. Stromeyer.

Isotopes

Cd-114 114 28.75%

Cd-112 112 24.11%

Cd-111 111 12.80%

Cd-110 110 12.47%

Cd-113 113 12.23%

Cd-116 116 7.51%

Cd-106 106 1.24%

Cd-108 108 0.8880%