A.A.Baikov Institute of Metallurgy and Materials Science

DATABASE ON PROPERTIES OF CHEMICAL ELEMENTS
Properties of element Er
PropertyValueCommentsReferences
ΔH interface M in O (Miedema)-949
 13823
ΔH interface O in M (Miedema)-633
 13823
Atomic concentration3,26(1023 m-3)  13823
Atomic electron scattering factor at 0.52,84 13823
Atomic environment number (Villars, Daams)12  13823
Atomic number start counting left top, left-right sequence68  13823
Atomic weight167,26(10-3 kg)  13823
Boiling temperature3074
 5391
Boiling temperature3133
 19178
Boiling temperature3136
 13823
Boiling temperature3141
 19178
Boiling temperature3173
 19178
Bulk modulus44,4(GPa)  13823
Charge nuclear effective (Clementi)8,48 13823
Chemical potential (Miedema)3,22 13823
Compression modulus0,411(GPa)  13823
Conductivity electrical1,18(104 Ohm-1*cm-1) 13823
Conductivity thermal14,3
 13823
Debye temperature176,9
 20518
Debye temperature188
 20518
Density9066
hcp, 297 K13823
Distance from core electron (Schubert)1,02(A) 13823
Distance from valence electron (Schubert)2,15(A) 13823
Electrochemical weight equivalent0,57907(mg*K-1)  13823
Electron affinity50
 13823
Electronegativity (Alfred-Rochow)1,11 13823
Electronegativity (Martynov&Batsanov)1,2 13823
Electronegativity (Pauling)1,1 13823
Electronegativity absolute3,3 13823
Energy cohesive (Brewer)3,29
 13823
Energy of ionization first588,6
 13823
Energy of ionization second1151
 13823
Energy of ionization third2207
 13823
Enthalpy of atomization311
 5391
Enthalpy of atomization317,1
 13823
Enthalpy of melting17,2
 13823
Enthalpy of melting20,2
 18453
Enthalpy of surface (Miedema)115
 13823
Enthalpy of vacancies (Miedema)120
 13823
Enthalpy of vaporization280
 13823
Enthalpy of vaporization293
 19178
Entropy of solid73,18526
 13823
Entropy of solid74,52
 18453
Entropy of solid75,86
 5391
Group number3 13823
Hardness (Brinell)1070[MPa] 13823
Linear thermal expansion coefficient12,2(10-6*K-1) 20518
Linear thermal expansion coefficient9,4(10-6*K-1) 13823
Magnetic frequency of nuclei2,89 13823
Magnetic resonance1,22(MHz)  13823
Magnetic susceptibility0,00000333(m3*kg-1) 13823
Mass attenuation coefficient CrKα373(cm2*g-1)  13823
Mass attenuation coefficient FeKα245(cm2*g-1) 13823
Mass attenuation coefficient for CuKα134(cm2*g-1)  13823
Mass attenuation coefficient for MoKα77,3(cm2*g-1)  13823
Melting temperature1795


 13823
Melting temperature1802
 5391
Mendeleev chemists sequence47  13823
Mendeleev d-t start left39  13823
Mendeleev d-t start right66  13823
Mendeleev H d-t start left38  13823
Mendeleev H d-t start right67  13823
Mendeleev H t-d start left37  13823
Mendeleev H t-d start right66  13823
Mendeleev Pettifor22  13823
Mendeleev Pettifor regular23  13823
Mendeleev t-d start left38  13823
Mendeleev t-d start right65  13823
Modulus of rigidity28,3(GPa) 13823
Molar heat capacity26,58
 5391
Molar heat capacity28,12
 13823
Moment nuclear magnetic0,48(mu) 13823
Nuclear charge effective (Slater)2,85 13823
nW1/3 (Miedema)1,23(a.u.-1/3)  13823
Oxidation state first 3 13823
Periodic number start counting bottom right, right-left sequence36  13823
Periodic number start counting left bottom, left-right sequence31  13823
Periodic number start counting top right, right-left sequence73  13823
Poisson's ratio0,237 13823
Quantum number6 13823
Radii covalent157
 13823
Radii metal (Waber)1,757(A) 13823
Radii pseudo-potential (Zunger)3,63(a.u.) 13823
Resistivity electrical87(10-8 Ohm*m)  13823
Sound velocity2830(m*s-1) 13823
Spectral lines no79 13823
Spin nuclei3,5(h) 13823
Surface tension at Tm1170
 13823
Thermal neutron capture cross section160(barns) 13823
V2/3 (Miedema)6,98(cm2)  13823
Valence electron number3 13823
Volume of atom (Villars, Daams)3,064(10-2 nm3)  13823
Work function3,1(eV)  13823
Young's modulus69,9(GPa)  13823
PropertyC.N.Radii ionic (Shannon)CommentsReferences
Er+360,890 Å 13826
Er+370,945 Å 13826
Er+381,004 Å 13826
Er+391,062 Å 13826
PropertyValueCommentsReferences
Radii ionic (Bokii & Belov)
Er+30,850 Å 13824
Radii ionic (Goldsmidt)
Er+31,040 Å 13824
Radii ionic (Yagoda)
Er+30,960 Å 13824