Yttrium

Transition metal · 88.90584 u · group 3, period 5

Yttrium · Y

Atomic number39

SymbolY

CategoryTransition metal

Standard stateSolid

Group · Period · Block3 · 5 · d

Electron configuration[Kr]5s2 4d1

Atomic mass88.90584 u

Atomic radius219 pm

Protons / Neutrons / Electrons39 / 50 / 39

Shells (e⁻ per shell)2, 8, 18, 9, 2

Electronegativity (Pauling)1.22

Ionization energy6.217 eV

Electron affinity0.307 eV

Oxidation states+3

Melting point1.80e+3 K · 1.52e+3 °C

Boiling point3.62e+3 K · 3.34e+3 °C

Density4.47 g/cm³

Year discovered1794

CPK color

#94FFFF

State at room temp (25 °C)

solid

Position