Periodic Table of Elements




Yttrium was discovered in 1794 by Finnish chemist Johan Gadolin (1760-1852). Anders Gustaf Ekeberg confirmed this in 1797 and named the new oxide yttria.

Name: Yttrium
Symbol: Y
Atomic number: 39
Atomic weight: 88.906
State: solid
Group, period, block: 3, 5, d
Color: Csilvery white
Classification: transition metal
Electron configuration: 4d1 5s2

Physical properties

Density: 4.472 g/cm-3
Melting point: 1799 K,1526 C,2779 F
Boiling point: 3609 K,3336 C,6037 F

Atomic properties

Oxidation states: 3, 2, 1
Electronegativity: 1.22 (Pauling scale)
Ionization energies: 1st: 600 kJmol-1
Covalent radius: 1907 pm
Van der Waals radius: no data
  • Y
  • Electron Configuration


There is one naturally occurring isotope of yttrium exists, 89Y.