A.A.Baikov Institute of Metallurgy and Materials Science

DATABASE ON PROPERTIES OF CHEMICAL ELEMENTS
Properties of element Ta
PropertyValueCommentsReferences
ΔH interface M in O (Miedema)-1023
 13823
ΔH interface M in S (Miedema)-376
 13823
ΔH interface O in M (Miedema)-409
 13823
ΔH interface S in M-177
 13823
γ-free electron to specific heat5,9(mJ*mol-1*K-2)  13823
Atomic concentration5,55(1023 m-3)  13823
Atomic electron scattering factor at 0.53 13823
Atomic environment number (Villars, Daams)14  13823
Atomic number start counting left top, left-right sequence73  13823
Atomic weight180,948(10-3 kg)  13823
Boiling temperature5693
 19178
Boiling temperature5698
 13823
Boiling temperature5731
 19178
Boiling temperature5762
 23615
Boiling temperature5833
 19178
Bulk modulus196,3(GPa)  13823
Charge nuclear effective (Clementi)9,53 13823
Chemical potential (Miedema)4,05 13823
Compression modulus2(GPa)  13823
Conductivity electrical7,15(104 Ohm-1*cm-1) 13823
Conductivity thermal57,5
 13823
Debye temperature240
 13823
Density16400
 20518
Density16654
 13823
Distance from core electron (Schubert)0,95(A) 13823
Distance from valence electron (Schubert)1,7(A) 13823
Electrochemical weight equivalent0,37488(mg*K-1)  13823
Electron affinity14
 13823
Electronegativity (Alfred-Rochow)1,33 13823
Electronegativity (Martynov&Batsanov)1,94 13823
Electronegativity (Pauling)1,5 13823
Electronegativity absolute4,11 13823
Energy cohesive (Brewer)8,1
 13823
Energy of ionization first761,3
 13823
Energy of ionization second1563
 13823
Energy of ionization third2123
 13823
Enthalpy of atomization782
 13823
Enthalpy of melting24,7
 13823
Enthalpy of surface (Miedema)217
 13823
Enthalpy of vacancies (Miedema)225
 13823
Enthalpy of vaporization733
 19178
Enthalpy of vaporization737
 19178
Enthalpy of vaporization753
 19178
Enthalpy of vaporization758,22
 13823
Enthalpy of vaporization781
 23615
Entropy of solid41,44932
 13823
Entropy of solid41,556
 23615
Group number5 13823
Hardness (Brinell)3430[MPa] 13823
Linear thermal expansion coefficient6,3(10-6*K-1) 13823
Magnetic frequency of nuclei11,97 13823
Magnetic resonance5,096(MHz)  13823
Magnetic susceptibility0,0000000107(m3*kg-1) 13823
Mass attenuation coefficient CrKα444(cm2*g-1)  13823
Mass attenuation coefficient FeKα297(cm2*g-1) 13823
Mass attenuation coefficient for CuKα166(cm2*g-1)  13823
Mass attenuation coefficient for MoKα95,4(cm2*g-1)  13823
Melting temperature3273
 13823
Mendeleev chemists sequence57  13823
Mendeleev d-t start left49  13823
Mendeleev d-t start right53  13823
Mendeleev H d-t start left48  13823
Mendeleev H d-t start right54  13823
Mendeleev H t-d start left50  13823
Mendeleev H t-d start right56  13823
Mendeleev Pettifor52  13823
Mendeleev Pettifor regular52  13823
Mendeleev t-d start left51  13823
Mendeleev t-d start right55  13823
Modulus of rigidity69,2(GPa) 13823
Molar heat capacity25,302
 23615
Molar heat capacity25,36
 13823
Moment nuclear magnetic2,34(mu) 13823
Nuclear charge effective (Slater)3,3 13823
nW1/3 (Miedema)1,63(a.u.-1/3)  13823
Oxidation state first 3 13823
Periodic number start counting bottom right, right-left sequence31  13823
Periodic number start counting left bottom, left-right sequence36  13823
Periodic number start counting top right, right-left sequence68  13823
Poisson's ratio0,342 13823
Quantum number6 13823
Radii covalent134
 13823
Radii metal (Waber)1,467(A) 13823
Radii pseudo-potential (Zunger)2,79(a.u.) 13823
Resistivity electrical12,45(10-8 Ohm*m)  13823
Sound velocity3400(m*s-1) 13823
Spectral lines no613 13823
Spin nuclei3,5(h) 13823
Surface tension at Tm3150
 13823
Thermal neutron capture cross section20,5(barns) 13823
V2/3 (Miedema)4,89(cm2)  13823
Valence electron number5 13823
Vapour pressure at Tm0,776(N*m-2) 13823
Volume of atom (Villars, Daams)1,801(10-2 nm3)  13823
Work function4,1(eV)  13823
Young's modulus185,7(GPa)  13823
PropertyC.N.Radii ionic (Shannon)CommentsReferences
Ta+360,720 Å 13826
Ta+460,680 Å 13826
Ta+560,640 Å 13826
Ta+570,690 Å 13826
Ta+580,740 Å 13826
PropertyValueCommentsReferences
Radii ionic (Bokii & Belov)
Ta+50,660 Å 13824
Radii ionic (Yagoda)
Ta+40,770 Å 13824
Ta+50,700 Å 13824