Attribute | Lawrencium × | Californium × |
---|---|---|
Standard state | Solid | Solid |
Electron configuration | [Rn]7s²5f¹⁴6d¹ | [Rn]7s²5f¹⁰ |
Atomic mass (u) | 266.12 | 251.07959 |
Electronegativity (pauling scale) | 1.3 | 1.3 |
Oxidation states |
|
|
Ionization energy (eV) | - | 6.3 |
Atomic radius (van der waals) (pm) | - | 245 |
Melting point (K) | 1900 | 1173 |
Atomic number | 103 | 98 |
Group name | Actinide | Actinide |
Symbol | Lr | Cf |
Discovered (year) | 1961 | 1950 |