Cadmium

Transition metal · 112.41 u · group 12, period 5

Cadmium · Cd

Atomic number48

SymbolCd

CategoryTransition metal

Standard stateSolid

Group · Period · Block12 · 5 · d

Electron configuration[Kr]5s2 4d10

Atomic mass112.41 u

Atomic radius158 pm

Protons / Neutrons / Electrons48 / 64 / 48

Shells (e⁻ per shell)2, 8, 18, 18, 2

Electronegativity (Pauling)1.69

Ionization energy8.994 eV

Electron affinity—

Oxidation states+2

Melting point594.2 K · 321.1 °C

Boiling point1.04e+3 K · 766.9 °C

Density8.69 g/cm³

Year discovered1817

CPK color

#FFD98F

State at room temp (25 °C)

solid

Position