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