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Classifications |
Alternate Names | None |
Names of Allotropes | None |
Block | s |
Group | 2 |
Period | 7 |
Series | Alkaline Earth Metal |
Electron Configuration | [Rn]7s2 |
Color | Silver |
Discovery | |
Gas phase | N/A |
CAS Number | CAS7440-14-4 |
CID Number | |
RTECS Number | N/A |
Electrical properties |
Electrical Type | Conductor |
Electrical Conductivity | 1×106 S/m |
Resistivity | 1×10-6 m Ω |
Superconducting Point | N/A |
Magnetic properties |
Magnetic Type | N/A |
Curie Point | N/A |
Mass Magnetic Susceptibility | N/A |
Molar Magnetic Susceptibility | N/A |
Volume Magnetic Susceptibility | N/A |
Abundances |
% in Universe | N/A |
% in Sun | N/A |
% in Meteorites | N/A |
% in Earth's Crust | 1×10-11% |
% in Oceans | 1×10-15% |
% in Humans | 1×10-13% |
Atomic dimensions and structure |
Atomic Radius | N/A |
Covalent Radius | 221 pm |
Van der Waals Radius | N/A |
Crystal Structure | Body-centered Cubic |
Lattice Angles | |
Lattice Constants | |
Space Group Name | Im_
3m |
Space Group Number | 229 |
Nuclear Properties |
Half-Life | 1585.489599188 y |
Lifetime | 2314.814814815 y |
Decay Mode | AlphaEmission |
Quantum Numbers | 1S0 |
Neutron Cross Section | 13 |
Neutron Mass Absorption | N/A |
Known Isotopes | 202Ra, 203Ra, 204Ra, 205Ra, 206Ra, 207Ra, 208Ra, 209Ra, 210Ra, 211Ra, 212Ra, 213Ra, 214Ra, 215Ra, 216Ra, 217Ra, 218Ra, 219Ra, 220Ra, 221Ra, 222Ra, 223Ra, 224Ra, 225Ra, 226Ra, 227Ra, 228Ra, 229Ra, 230Ra, 231Ra, 232Ra, 233Ra, 234Ra |
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Stable Isotopes | |
Isotopic Abundances | |
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