Attribute | Californium × | Einsteinium × |
---|---|---|
Standard state | Solid | Solid |
Electron configuration | [Rn]7s²5f¹⁰ | [Rn]7s²5f¹¹ |
Atomic mass (u) | 251.07959 | 252.083 |
Electronegativity (pauling scale) | 1.3 | 1.3 |
Oxidation states |
|
|
Ionization energy (eV) | 6.3 | 6.42 |
Atomic radius (van der waals) (pm) | 245 | 245 |
Melting point (K) | 1173 | 1133 |
Atomic number | 98 | 99 |
1↑Group name | Actinide | Actinide |
Discovered (year) | 1950 | 1952 |
Symbol | Cf | Es |