A.A.Baikov Institute of Metallurgy and Materials Science

DATABASE ON PROPERTIES OF CHEMICAL ELEMENTS
Properties of element Hf
PropertyValueCommentsReferences
ΔH interface M in O (Miedema)-1113
 13823
ΔH interface O in M (Miedema)-557
 13823
γ-free electron to specific heat2,16(mJ*mol-1*K-2)  13823
Atomic concentration4,52(1023 m-3)  13823
Atomic electron scattering factor at 0.52,97 13823
Atomic environment number (Villars, Daams)12  13823
Atomic number start counting left top, left-right sequence72  13823
Atomic weight178,49(10-3 kg)  13823
Boiling temperature4850
 5003
Boiling temperature4873
 19178
Boiling temperature4876
 19178
Boiling temperature5470
 13823
Boiling temperature5673
 19178
Bulk modulus109(GPa)  13823
Charge nuclear effective (Clementi)9,16 13823
Chemical potential (Miedema)3,6 13823
Compression modulus1,09(GPa)  13823
Conductivity electrical2,5(104 Ohm-1*cm-1) 13823
Conductivity thermal23
 13823
Debye temperature250
 5003
Debye temperature252
 13823
Density13310
 13823
Distance from core electron (Schubert)0,97(A) 13823
Distance from valence electron (Schubert)1,88(A) 13823
Electrochemical weight equivalent0,46269(mg*K-1)  13823
Electronegativity (Alfred-Rochow)1,23 13823
Electronegativity (Martynov&Batsanov)1,73 13823
Electronegativity (Pauling)1,3 13823
Electronegativity absolute3,8 13823
Energy cohesive (Brewer)6,44
 13823
Energy of ionization first675,4
 13823
Energy of ionization second1438
 13823
Energy of ionization third2248
 13823
Enthalpy of atomization619,2
 13823
Enthalpy of melting14,623
 5003
Enthalpy of melting14,69
 5003
Enthalpy of melting16,064
 5003
Enthalpy of melting20,247
 5003
Enthalpy of melting25
 13823
Enthalpy of melting25,941
 5003
Enthalpy of surface (Miedema)171
 13823
Enthalpy of vacancies (Miedema)180
 13823
Enthalpy of vaporization570,7
 13823
Enthalpy of vaporization571
 19178
Enthalpy of vaporization621
 5003
Enthalpy of vaporization648
 19178
Enthalpy of vaporization661
 19178
Entropy of solid43,56
 5003
Entropy of solid43,6
 20518
Entropy of solid45,6779
 13823
Group number4 13823
Hardness (Brinell)1800[MPa] 13823
Linear thermal expansion coefficient5,9(10-6*K-1) 13823
Magnetic frequency of nuclei3,12 13823
Magnetic resonance1,3(MHz)  13823
Magnetic susceptibility0,0000000053(m3*kg-1) 13823
Mass attenuation coefficient CrKα430(cm2*g-1)  13823
Mass attenuation coefficient FeKα286(cm2*g-1) 13823
Mass attenuation coefficient for CuKα159(cm2*g-1)  13823
Mass attenuation coefficient for MoKα91,7(cm2*g-1)  13823
Melting temperature2495
 13823
Melting temperature2502
 5003
Mendeleev chemists sequence54  13823
Mendeleev d-t start left46  13823
Mendeleev d-t start right56  13823
Mendeleev H d-t start left45  13823
Mendeleev H d-t start right57  13823
Mendeleev H t-d start left47  13823
Mendeleev H t-d start right59  13823
Mendeleev Pettifor50  13823
Mendeleev Pettifor regular49  13823
Mendeleev t-d start left48  13823
Mendeleev t-d start right58  13823
Modulus of rigidity56(GPa) 13823
Molar heat capacity25,69
 5003
Molar heat capacity25,73
 13823
Moment nuclear magnetic0,61(mu) 13823
Nuclear charge effective (Slater)3,15 13823
nW1/3 (Miedema)1,45(a.u.-1/3)  13823
Oxidation state first 4 13823
Periodic number start counting bottom right, right-left sequence32  13823
Periodic number start counting left bottom, left-right sequence35  13823
Periodic number start counting top right, right-left sequence69  13823
Poisson's ratio0,26 13823
Quantum number6 13823
Radii covalent144
 13823
Radii metal (Waber)1,58(A) 13823
Radii pseudo-potential (Zunger)2,91(a.u.) 13823
Resistivity electrical35,1(10-8 Ohm*m)  13823
Sound velocity2780(m*s-1) 13823
Spectral lines no151 13823
Spin nuclei3,5(h) 13823
Surface tension at Tm2150
 13823
Thermal neutron capture cross section104(barns) 13823
V2/3 (Miedema)5,65(cm2)  13823
Valence electron number4 13823
Vapour pressure at Tm0,00112(N*m-2) 13823
Volume of atom (Villars, Daams)2,241(10-2 nm3)  13823
Work function3,9(eV)  13823
Young's modulus141(GPa)  13823
PropertyC.N.Radii ionic (Shannon)CommentsReferences
Hf+440,580 Å 13826
Hf+460,710 Å 13826
Hf+470,760 Å 13826
Hf+480,830 Å 13826
PropertyValueCommentsReferences
Radii ionic (Bokii & Belov)
Hf+40,820 Å 13824
Radii ionic (Yagoda)
Hf+40,800 Å 13824