Yttrium

Symbol | Y
Latin name | Yttrium
Atomic number | 39
Period | 5
Element category | Transition elements
Relative atomic mass | 88.90585
Group | III.B
Electronegativity | 1.2
Oxidation numbers | 3
Electron configuration | 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d1 5s2
Density [g/cm3] | 4.472
State | Solid
Melting point [°C] | 1522
Boiling point [°C] | 3200
Atomic radius [pm] | 212
Covalent radius [pm] | 162
Thermal conductivity [W m-1K-1] | 17.2
Heat capacity [J K-1g-1] | 0.3
Discovery | 1794
Brinell hardness [MPa] | 589
Young's modulus [GPa] | 64
Electrical conductivity [S m-1] | 1.8 · 106
Shear modulus [GPa] | 26
1.st ionization energy [eV] | 6.217
2.nd ionization energy [eV] | 12.24
3.rd ionization energy [eV] | 20.52
Stable isotopes | 1
Unstable isotopes | 20