Properties of He:

Property Name Value Unit Comments Reference
ΔH interface M in O (Miedema) 0 (kJmol-1) 13823
ΔH interface O in M (Miedema) 0 (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 0 (mJmol-1K-2) 13823
Atomic concentration 0 (1023 m-3) 13823
Atomic electron scattering factor at 0.5 0,058 13823
Atomic environment number (Villars, Daams) 12 13823
Atomic number start counting left top, left-right sequence 2
Atomic weight 4,003 (10-3 kg) 13823
Boiling temperature 4,22 (K) 13823
Boiling temperature 4,15 (K) 19178
Boiling temperature 4,216 (K) 19178
Boiling temperature 4,37 (K) 19178
Bulk modulus 0 (GPa) 13823
Charge nuclear effective (Clementi) 1,69 13823
Chemical potential (Miedema) 0 13823
Compression modulus 0 (GPa) 13823
Conductivity electrical 0 (104 Ohm-1cm-1) 13823
Conductivity thermal 0,155 (Jmol-1K-1) 13823
Debye temperature 0 (K) 13823
Density 124,8 (kgm-3) 13823
Distance to core electron (Schubert) 1,76 (A) 13823
Distance to valence electron (Schubert) 1,76 (A) 13823
Electrochemical weight equivalent 0,04147 (mgK-1) 13823
Electron affinity 0 (kJmol-1) 13823
Electronegativity (Alfred-Rochow) 0 13823
Electronegativity (Martynov&Batsanov) 0,05 13823
Electronegativity (Pauling) 0 13823
Electronegativity absolute 12,3 13823
Energy cohesive (Brewer) 0,01 (Jmol-1) 13823
Energy of ionization (first) 2372,3 (kJmol-1) 13823
Energy of ionization (second) 5250 (kJmol-1) 13823
Energy of ionization (third) 0 (kJmol-1) 13823
Enthalpy of atomization 0 (kJmol-1) 13823
Enthalpy of melting 0,021 (kJmol-1) 13823
Enthalpy of surface (Miedema) 0 (kJmol-1) 13823
Enthalpy of vacancies (Miedema) 0 (kJmol-1) 13823
Enthalpy of vaporization 0,084 (kJmol-1) 19178
Enthalpy of vaporization 0,083 (kJmol-1) 19178
Enthalpy of vaporization 0,08 (kJmol-1) 19178
Enthalpy of vaporization 0,082 (kJmol-1) 13823
Entropy of solid 150 (Jmol-1K-1) 13823
Entropy of solid 126,153 (Jmol-1K-1) 20518
Group number 8 13823
Hardness (Brinell) 0 [MPa] 13823
Linear thermal expansion coefficient 0 (10-6K-1) 13823
Magnetic frequency of nuclei 76,178 13823
Magnetic resonance 32,4338 (MHz) 13823
Magnetic susceptibility 0,0000000059 (m3kg-1) 13823
Mass attenuation coefficient FeKα 0,569 (cm2g-1) 13823
Mass attenuation coefficient for CrKα 0,81 (cm2g-1) 13823
Mass attenuation coefficient for CuKα 0,383 (cm2g-1) 13823
Mass attenuation coefficient for MoKα 0,21 (cm2g-1) 13823
Melting temperature 1 (K) 13823
Mendeleev chemists sequence 89 13823
Mendeleev d-t start left 103 13823
Mendeleev d-t start right 6 13823
Mendeleev H d-t start left 103 13823
Mendeleev H d-t start right 6 13823
Mendeleev H t-d start left 98 13823
Mendeleev H t-d start right 1 13823
Mendeleev Pettifor 1 13823
Mendeleev Pettifor regular 1 13823
Mendeleev t-d start left 98 13823
Mendeleev t-d start right 1 13823
Modulus of rigidity 0 (GPa) 13823
Molar heat capacity 20,786 (Jmol-1K-1) 13823
Moment nuclear magnetic -2,127 (mu) 13823
Nuclear charge effective (Slater) 1,7 13823
nWS^(1/3) (Miedema) 0 (a.u.-1/3) 13823
Oxidation state (first) 0 13823
Periodic number start counting bottom right, right-left sequence 102 13823
Periodic number start counting left bottom, left-right sequence 103 13823
Periodic number start counting top right, right-left sequence 1 13823
Poisson's ratio 0 13823
Quantum number 1 13823
Radii covalent 10 (pm) 13823
Radii metal (Waber) 0,8 (A) 13823
Radii pseudo-potential (Zunger) 0,2 13823
Resistivity electrical 0 (10-8 Ohmm) 13823
Sound velocity 970 (ms-1) 13823
Spectral lines no 62 13823
Spin nuclei 0,5 (h) 13823
Surface tension at Tm 0 (mJm-2) 13823
Thermal neutron capture cross section 0,007 (barns) 13823
V^(2/3) (Miedema) 0 (cm2) 13823
Valence electron number 8 13823
Vapour pressure at Tm 0 (Nm-2) 13823
Volume of atom (Villars, Daams) 1,906 (10-2 nm3) 13823
Work function 0 (eV) 13823
Young's modulus 0 (GPa) 13823

Radii Ionic properties of He:

No Radii Ionic properties

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