A.A.Baikov Institute of Metallurgy and Materials Science

DATABASE ON PROPERTIES OF CHEMICAL ELEMENTS
Properties of element Tc
PropertyValueCommentsReferences
ΔH interface M in O (Miedema)-556
 13823
ΔH interface O in M (Miedema)-217
 13823
Atomic concentration7,04(1023 m-3)  13823
Atomic electron scattering factor at 0.51,99 13823
Atomic environment number (Villars, Daams)12  13823
Atomic number start counting left top, left-right sequence43  13823
Atomic weight98(10-3 kg)  13823
Boiling temperature4538
 20518
Boiling temperature5150
 13823
Charge nuclear effective (Clementi)7,23 13823
Chemical potential (Miedema)5,3 13823
Compression modulus2,97(GPa)  13823
Conductivity electrical5,9(104 Ohm-1*cm-1) 13823
Conductivity thermal50,6
 13823
Debye temperature453
 13823
Density11000
 20518
Density11500
 13823
Distance from core electron (Schubert)0,86(A) 13823
Distance from valence electron (Schubert)1,35(A) 13823
Electrochemical weight equivalent0,14478(mg*K-1)  13823
Electron affinity96
 13823
Electronegativity (Alfred-Rochow)1,36 13823
Electronegativity (Martynov&Batsanov)2,18 13823
Electronegativity (Pauling)1,9 13823
Electronegativity absolute3,91 13823
Energy cohesive (Brewer)6,85
 13823
Energy of ionization first702,4
 13823
Energy of ionization second1472
 13823
Energy of ionization third2850
 13823
Enthalpy of atomization678
 13823
Enthalpy of melting23,8
 13823
Enthalpy of surface (Miedema)186
 13823
Enthalpy of vacancies (Miedema)195
 13823
Enthalpy of vaporization585,2
 13823
Entropy of solid33,4944
 13823
Group number7 13823
Magnetic frequency of nuclei22,508 13823
Magnetic resonance9,5832(MHz)  13823
Magnetic susceptibility0,000000031(m3*kg-1) 13823
Mass attenuation coefficient CrKα485(cm2*g-1)  13823
Mass attenuation coefficient FeKα316(cm2*g-1) 13823
Mass attenuation coefficient for CuKα172(cm2*g-1)  13823
Mass attenuation coefficient for MoKα19,7(cm2*g-1)  13823
Melting temperature2430
 20518
Melting temperature2445
 13823
Mendeleev chemists sequence65  13823
Mendeleev d-t start left56  13823
Mendeleev d-t start right48  13823
Mendeleev H d-t start left55  13823
Mendeleev H d-t start right49  13823
Mendeleev H t-d start left55  13823
Mendeleev H t-d start right49  13823
Mendeleev Pettifor59  13823
Mendeleev Pettifor regular59  13823
Mendeleev t-d start left56  13823
Mendeleev t-d start right48  13823
Molar heat capacity25,88
 13823
Moment nuclear magnetic1(mu) 13823
Nuclear charge effective (Slater)3,6 13823
nW1/3 (Miedema)1,81(a.u.-1/3)  13823
Oxidation state first 4 13823
Periodic number start counting bottom right, right-left sequence61  13823
Periodic number start counting left bottom, left-right sequence56  13823
Periodic number start counting top right, right-left sequence48  13823
Quantum number5 13823
Radii covalent127
 13823
Radii metal (Waber)1,36(A) 13823
Radii pseudo-potential (Zunger)2,65(a.u.) 13823
Resistivity electrical22,6(10-8 Ohm*m)  13823
Spectral lines no100 13823
Spin nuclei2,5(h) 13823
Surface tension at Tm3150
 13823
Thermal neutron capture cross section22(barns) 13823
V2/3 (Miedema)4,21(cm2)  13823
Valence electron number7 13823
Vapour pressure at Tm0,0229(N*m-2) 13823
Volume of atom (Villars, Daams)1,43(10-2 nm3)  13823
PropertyC.N.Radii ionic (Shannon)CommentsReferences
Tc+460,645 Å 13826
Tc+560,600 Å 13826
Tc+740,370 Å 13826
Tc+760,560 Å 13826
PropertyValueCommentsReferences
Radii ionic (Yagoda)
Tc+20,950 Å 13824
Tc+40,720 Å 13824
Tc+70,570 Å 13824