Properties of Hf:

Property Name Value Unit Comments Reference
ΔH interface M in O (Miedema) -1113 (kJmol-1) 13823
ΔH interface O in M (Miedema) -557 (kJmol-1) 13823
ΔH interface S in M 0 (kJmol-1) 13823
Δinterface M in S (Miedema) 0 (kJmol-1) 13823
γ-free electron to specific heat 2,16 (mJmol-1K-2) 13823
Atomic concentration 4,52 (1023 m-3) 13823
Atomic electron scattering factor at 0.5 2,97 13823
Atomic environment number (Villars, Daams) 12 13823
Atomic number start counting left top, left-right sequence 72 13823
Atomic weight 178,49 (10-3 kg) 13823
Boiling temperature 4850 (K) 5003
Boiling temperature 5470 (K) 13823
Boiling temperature 5673 (K) 19178
Boiling temperature 4873 (K) 19178
Boiling temperature 4876 (K) 19178
Bulk modulus 109 (GPa) 13823
Charge nuclear effective (Clementi) 9,16 13823
Chemical potential (Miedema) 3,6 13823
Compression modulus 1,09 (GPa) 13823
Conductivity electrical 2,5 (104 Ohm-1cm-1) 13823
Conductivity thermal 23 (Jmol-1K-1) 13823
Debye temperature 252 (K) 13823
Debye temperature 250 (K) 5003
Density 13310 (kgm-3) 13823
Distance to core electron (Schubert) 0,97 (A) 13823
Distance to valence electron (Schubert) 1,88 (A) 13823
Electrochemical weight equivalent 0,46269 (mgK-1) 13823
Electron affinity 0 (kJmol-1) 13823
Electronegativity (Alfred-Rochow) 1,23 13823
Electronegativity (Martynov&Batsanov) 1,73 13823
Electronegativity (Pauling) 1,3 13823
Electronegativity absolute 3,8 13823
Energy cohesive (Brewer) 6,44 (Jmol-1) 13823
Energy of ionization (first) 675,4 (kJmol-1) 13823
Energy of ionization (second) 1438 (kJmol-1) 13823
Energy of ionization (third) 2248 (kJmol-1) 13823
Enthalpy of atomization 619,2 (kJmol-1) 13823
Enthalpy of melting 25,941 (kJmol-1) 5003
Enthalpy of melting 20,247 (kJmol-1) 5003
Enthalpy of melting 14,623 (kJmol-1) 5003
Enthalpy of melting 16,064 (kJmol-1) 5003
Enthalpy of melting 14,69 (kJmol-1) 5003
Enthalpy of melting 25 (kJmol-1) 13823
Enthalpy of surface (Miedema) 171 (kJmol-1) 13823
Enthalpy of vacancies (Miedema) 180 (kJmol-1) 13823
Enthalpy of vaporization 648 (kJmol-1) 19178
Enthalpy of vaporization 571 (kJmol-1) 19178
Enthalpy of vaporization 661 (kJmol-1) 19178
Enthalpy of vaporization 570,7 (kJmol-1) 13823
Enthalpy of vaporization 621 (kJmol-1) 5003
Entropy of solid 43,56 (Jmol-1K-1) 5003
Entropy of solid 45,6779 (Jmol-1K-1) 13823
Entropy of solid 43,6 (Jmol-1K-1) 20518
Group number 4 13823
Hardness (Brinell) 1800 [MPa] 13823
Linear thermal expansion coefficient 5,9 (10-6K-1) 13823
Magnetic frequency of nuclei 3,12 13823
Magnetic resonance 1,3 (MHz) 13823
Magnetic susceptibility 0,0000000053 (m3kg-1) 13823
Mass attenuation coefficient FeKα 286 (cm2g-1) 13823
Mass attenuation coefficient for CrKα 430 (cm2g-1) 13823
Mass attenuation coefficient for CuKα 159 (cm2g-1) 13823
Mass attenuation coefficient for MoKα 91,7 (cm2g-1) 13823
Melting temperature 2495 (K) 13823
Melting temperature 2502 (K) 5003
Mendeleev chemists sequence 54 13823
Mendeleev d-t start left 46 13823
Mendeleev d-t start right 56 13823
Mendeleev H d-t start left 45 13823
Mendeleev H d-t start right 57 13823
Mendeleev H t-d start left 47 13823
Mendeleev H t-d start right 59 13823
Mendeleev Pettifor 50 13823
Mendeleev Pettifor regular 49 13823
Mendeleev t-d start left 48 13823
Mendeleev t-d start right 58 13823
Modulus of rigidity 56 (GPa) 13823
Molar heat capacity 25,73 (Jmol-1K-1) 13823
Molar heat capacity 25,69 (Jmol-1K-1) 5003
Moment nuclear magnetic 0,61 (mu) 13823
Nuclear charge effective (Slater) 3,15 13823
nWS^(1/3) (Miedema) 1,45 (a.u.-1/3) 13823
Oxidation state (first) 4 13823
Periodic number start counting bottom right, right-left sequence 32 13823
Periodic number start counting left bottom, left-right sequence 35 13823
Periodic number start counting top right, right-left sequence 69 13823
Poisson's ratio 0,26 13823
Quantum number 6 13823
Radii covalent 144 (pm) 13823
Radii metal (Waber) 1,58 (A) 13823
Radii pseudo-potential (Zunger) 2,91 13823
Resistivity electrical 35,1 (10-8 Ohmm) 13823
Sound velocity 2780 (ms-1) 13823
Spectral lines no 151 13823
Spin nuclei 3,5 (h) 13823
Surface tension at Tm 2150 (mJm-2) 13823
Thermal neutron capture cross section 104 (barns) 13823
V^(2/3) (Miedema) 5,65 (cm2) 13823
Valence electron number 4 13823
Vapour pressure at Tm 0,00112 (Nm-2) 13823
Volume of atom (Villars, Daams) 2,241 (10-2 nm3) 13823
Work function 3,9 (eV) 13823
Young's modulus 141 (GPa) 13823

Radii Ionic properties of Hf:

Property Name Charge CN Value Unit Comments Reference
Radii ionic (Bokii & Belov) 4 0,82 (Å) 13824
Radii ionic (Yagoda) 4 0,8 (Å) 13824
Radii ionic (Shannon) 4 4 0,58 (Å) 13826
Radii ionic (Shannon) 4 6 0,71 (Å) 13826
Radii ionic (Shannon) 4 7 0,76 (Å) 13826
Radii ionic (Shannon) 4 8 0,83 (Å) 13826