Dysprosium

Lanthanide · 162.500 u · group 3, period 6

Dysprosium · Dy

Atomic number66

SymbolDy

CategoryLanthanide

Standard stateSolid

Group · Period · Block3 · 6 · f

Electron configuration[Xe]6s2 4f10

Atomic mass162.500 u

Atomic radius229 pm

Protons / Neutrons / Electrons66 / 97 / 66

Shells (e⁻ per shell)2, 8, 18, 28, 8, 2

Electronegativity (Pauling)1.22

Ionization energy5.939 eV

Electron affinity—

Oxidation states+3

Melting point1.69e+3 K · 1.41e+3 °C

Boiling point2.84e+3 K · 2.57e+3 °C

Density8.55 g/cm³

Year discovered1886

CPK color

#1FFFC7

State at room temp (25 °C)

solid

Position