A.A.Baikov Institute of Metallurgy and Materials Science

DATABASE ON PROPERTIES OF CHEMICAL ELEMENTS
Properties of element Nb
PropertyValueCommentsReferences
ΔH interface M in O (Miedema)-951
 13823
ΔH interface M in S (Miedema)-354
 13823
ΔH interface O in M (Miedema)-409
 13823
ΔH interface S in M-177
 13823
γ-free electron to specific heat7,79(mJ*mol-1*K-2)  13823
Atomic concentration5,56(1023 m-3)  13823
Atomic electron scattering factor at 0.51,92 13823
Atomic environment number (Villars, Daams)14  13823
Atomic number start counting left top, left-right sequence41  13823
Atomic weight92,906(10-3 kg)  13823
Boiling temperature3573
 19178
Boiling temperature4973
 19178
Boiling temperature5015
 13823
Boiling temperature5017
 19178
Bulk modulus170,3(GPa)  13823
Charge nuclear effective (Clementi)6,7 13823
Chemical potential (Miedema)4,05 13823
Compression modulus1,702(GPa)  13823
Conductivity electrical6,25(104 Ohm-1*cm-1) 13823
Conductivity thermal53,7
 13823
Debye temperature275
 13823
Density8570
 13823
Distance from core electron (Schubert)0,95(A) 13823
Distance from valence electron (Schubert)1,75(A) 13823
Electrochemical weight equivalent0,19256(mg*K-1)  13823
Electron affinity86,2
 13823
Electronegativity (Alfred-Rochow)1,23 13823
Electronegativity (Martynov&Batsanov)2,03 13823
Electronegativity (Pauling)1,6 13823
Electronegativity absolute4 13823
Energy cohesive (Brewer)7,57
 13823
Energy of ionization first663,8
 13823
Energy of ionization second1382
 13823
Energy of ionization third2416
 13823
Enthalpy of atomization725,9
 13823
Enthalpy of melting26,8
 13823
Enthalpy of melting30,421
 23289
Enthalpy of surface (Miedema)186
 13823
Enthalpy of vacancies (Miedema)185
 13823
Enthalpy of vaporization680,19
 13823
Enthalpy of vaporization690
 19178
Enthalpy of vaporization694
 19178
Enthalpy of vaporization697
 19178
Entropy of solid36,28
 23289
Entropy of solid36,55076
 13823
Group number5 13823
Hardness (Brinell)2450[MPa] 13823
Linear thermal expansion coefficient7,3(10-6*K-1) 13823
Magnetic frequency of nuclei24,442 13823
Magnetic resonance10,4048(MHz)  13823
Magnetic susceptibility0,0000000276(m3*kg-1) 13823
Mass attenuation coefficient CrKα441(cm2*g-1)  13823
Mass attenuation coefficient FeKα284(cm2*g-1) 13823
Mass attenuation coefficient for CuKα153(cm2*g-1)  13823
Mass attenuation coefficient for MoKα17,1(cm2*g-1)  13823
Melting temperature2741
 13823
Mendeleev chemists sequence58  13823
Mendeleev d-t start left50  13823
Mendeleev d-t start right54  13823
Mendeleev H d-t start left49  13823
Mendeleev H d-t start right55  13823
Mendeleev H t-d start left49  13823
Mendeleev H t-d start right55  13823
Mendeleev Pettifor53  13823
Mendeleev Pettifor regular53  13823
Mendeleev t-d start left50  13823
Mendeleev t-d start right54  13823
Modulus of rigidity37,5(GPa) 13823
Molar heat capacity24,48
 23289
Molar heat capacity24,6
 13823
Moment nuclear magnetic6,144(mu) 13823
Nuclear charge effective (Slater)3,3 13823
nW1/3 (Miedema)1,64(a.u.-1/3)  13823
Oxidation state first 3 13823
Periodic number start counting bottom right, right-left sequence63  13823
Periodic number start counting left bottom, left-right sequence54  13823
Periodic number start counting top right, right-left sequence50  13823
Poisson's ratio0,387 13823
Quantum number5 13823
Radii covalent134
 13823
Radii metal (Waber)1,468(A) 13823
Radii pseudo-potential (Zunger)2,76(a.u.) 13823
Resistivity electrical12,5(10-8 Ohm*m)  13823
Sound velocity3480(m*s-1) 13823
Spectral lines no450 13823
Spin nuclei4,5(h) 13823
Surface tension at Tm2700
 13823
Thermal neutron capture cross section1,15(barns) 13823
V2/3 (Miedema)4,89(cm2)  13823
Valence electron number5 13823
Vapour pressure at Tm755(N*m-2) 13823
Volume of atom (Villars, Daams)1,807(10-2 nm3)  13823
Work function4,3(eV)  13823
Young's modulus104,9(GPa)  13823
PropertyC.N.Radii ionic (Shannon)CommentsReferences
Nb+360,720 Å 13826
Nb+460,680 Å 13826
Nb+480,790 Å 13826
Nb+540,480 Å 13826
Nb+560,640 Å 13826
Nb+570,690 Å 13826
Nb+580,740 Å 13826
PropertyValueCommentsReferences
Radii ionic (Bokii & Belov)
Nb+40,670 Å 13824
Nb+50,660 Å 13824
Radii ionic (Goldsmidt)
Nb+50,690 Å 13824
Radii ionic (Pauling)
Nb+40,670 Å 13824
Nb+50,700 Å 13824
Radii ionic (Yagoda)
Nb+40,770 Å 13824
Nb+50,700 Å 13824