Properties of Ra:

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 3,46 13823
Atomic environment number (Villars, Daams) 14 13823
Atomic number start counting left top, left-right sequence 88 13823
Atomic weight 226,025 (10-3 kg) 13823
Boiling temperature 1413 (K) 13823
Bulk modulus 0 (GPa) 13823
Charge nuclear effective (Clementi) 9 13823
Chemical potential (Miedema) 0 13823
Compression modulus 0,132 (GPa) 13823
Conductivity electrical 0 (104 Ohm-1cm-1) 13823
Conductivity thermal 18,6 (Jmol-1K-1) 13823
Debye temperature 0 (K) 13823
Density 5000 (kgm-3) 13823
Distance to core electron (Schubert) 1,48 (A) 13823
Distance to valence electron (Schubert) 3,45 (A) 13823
Electrochemical weight equivalent 1,17124 (mgK-1) 13823
Electron affinity 50 (kJmol-1) 13823
Electronegativity (Alfred-Rochow) 0,97 13823
Electronegativity (Martynov&Batsanov) 0,9 13823
Electronegativity (Pauling) 0,9 13823
Electronegativity absolute 2,2 13823
Energy cohesive (Brewer) 1,66 (Jmol-1) 13823
Energy of ionization (first) 509,1 (kJmol-1) 13823
Energy of ionization (second) 975 (kJmol-1) 13823
Energy of ionization (third) 3281 (kJmol-1) 13823
Enthalpy of atomization 159 (kJmol-1) 13823
Enthalpy of melting 8,5 (kJmol-1) 13823
Enthalpy of surface (Miedema) 0 (kJmol-1) 13823
Enthalpy of vacancies (Miedema) 0 (kJmol-1) 13823
Enthalpy of vaporization 136,7 (kJmol-1) 13823
Entropy of solid 71,1756 (Jmol-1K-1) 13823
Group number 2 13823
Hardness (Brinell) 0 [MPa] 13823
Linear thermal expansion coefficient 0 (10-6K-1) 13823
Magnetic frequency of nuclei 5 13823
Magnetic resonance 1 (MHz) 13823
Magnetic susceptibility 0 (m3kg-1) 13823
Mass attenuation coefficient FeKα 0 (cm2g-1) 13823
Mass attenuation coefficient for CrKα 0 (cm2g-1) 13823
Mass attenuation coefficient for CuKα 0 (cm2g-1) 13823
Mass attenuation coefficient for MoKα 120 (cm2g-1) 13823
Melting temperature 973 (K) 13823
Mendeleev chemists sequence 9 13823
Mendeleev d-t start left 8 13823
Mendeleev d-t start right 91 13823
Mendeleev H d-t start left 7 13823
Mendeleev H d-t start right 92 13823
Mendeleev H t-d start left 12 13823
Mendeleev H t-d start right 97 13823
Mendeleev Pettifor 13 13823
Mendeleev Pettifor regular 14 13823
Mendeleev t-d start left 13 13823
Mendeleev t-d start right 96 13823
Modulus of rigidity 0 (GPa) 13823
Molar heat capacity 25,76 (Jmol-1K-1) 13823
Moment nuclear magnetic 1 (mu) 13823
Nuclear charge effective (Slater) 1,65 13823
nWS^(1/3) (Miedema) 0 (a.u.-1/3) 13823
Oxidation state (first) 2 13823
Periodic number start counting bottom right, right-left sequence 16 13823
Periodic number start counting left bottom, left-right sequence 2 13823
Periodic number start counting top right, right-left sequence 102 13823
Poisson's ratio 0 13823
Quantum number 7 13823
Radii covalent 200 (pm) 13823
Radii metal (Waber) 2,26 (A) 13823
Radii pseudo-potential (Zunger) 3,53 13823
Resistivity electrical 100 (10-8 Ohmm) 13823
Sound velocity 0 (ms-1) 13823
Spectral lines no 127 13823
Spin nuclei 3 (h) 13823
Surface tension at Tm 0 (mJm-2) 13823
Thermal neutron capture cross section 20 (barns) 13823
V^(2/3) (Miedema) 0 (cm2) 13823
Valence electron number 2 13823
Vapour pressure at Tm 327 (Nm-2) 13823
Volume of atom (Villars, Daams) 6,822 (10-2 nm3) 13823
Work function 3,2 (eV) 13823
Young's modulus 0 (GPa) 13823

Radii Ionic properties of Ra:

Property Name Charge CN Value Unit Comments Reference
Radii ionic (Bokii & Belov) 2 1,44 (Å) 13824
Radii ionic (Goldsmidt) 2 1,52 (Å) 13824
Radii ionic (Yagoda) 2 1,34 (Å) 13824
Radii ionic (Shannon) 2 12 1,7 (Å) 13826
Radii ionic (Shannon) 2 8 1,48 (Å) 13826
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