Latin nameYttrium
English nameYttrium
chemical symbolY
atomic number39
relative atomic mass88,90585
classificationtransition metals
discovery year1792
discovererJ. Gadolin
melting point [°C]1522
boiling point [°C]3338
density [g cm-3]4,47
density at melting point [g cm-3]4,24
electronegativity [Pauling]1,22
oxidation statesIII
electron configuration[Kr]4d1 5s2
atomic radius [pm]212
covalent radius [pm]162
specific heat [J g-1K-1]0,3
heat of fusion [kJ mol-1]11,4
thermal conductivity [W m-1 K-1]17
el. conductivity [S m-1]1,8.106
1. ionizing potential [eV]6,217
2. ionizing potential [eV]12,24
3. ionizing potential [eV]20,52
Mohs hardness-
Vickers hardness [MPa]-
Brinell hardness [MPa]589
shear modulus [GPa]26
Young's modulus [GPa]64
point of superconductivity [K]1,3
state at normal conditionssolid