- Atomic Radius (Å)
Yttrium is a chemical element with symbol Y and atomic number 39. It is a silvery-metallic transition metal chemically similar to the lanthanides and it has often been classified as a "rare earth element". Yttrium is almost always found combined with the lanthanides in rare earth minerals and is never found in nature as a free element.
39 Atomic Number
88.91 u Atomic Mass
1799.15 K Melting Point
3609 K Boiling Point
4.47 g/cm³ Density
2.3 Å Atomic Radius
1.9 Å Covalent Radius
1.22 Electronegativity
6.22 eV First Ionization Energy
29.6 Electron Affinity
5 Number of Shells
2, 8, 18, 9, 2 Electron Shell Occupations
0.3 J/g Specific Heat