NO. 048Post-Transition

Cd

Cadmium

Cadmium is a soft, toxic metal used in batteries, pigments, and corrosion-resistant coatings.

Crystal Structure

Hexagonal close-packed (hcp)

Atomic Mass112.41 u

Density8.65 g/cm³

Melting Point594 K

Boiling Point1040 K

Atomic Radius151 pm

Electronegativity1.69

Ionization Energy868 kJ/mol

Electron Affinity0 kJ/mol

Bonding TypeMetallic

Oxidation States2

Acid/BaseBasic

ReactivityMedium

Electron Configuration

[Kr] 4d10 5s2

Discovered ByFriedrich Stromeyer

Year1817

Known Isotopes

Cd-106Cd-108Cd-110Cd-111Cd-112Cd-113Cd-114Cd-116