Attribute | Rutherfordium × | Seaborgium × |
---|---|---|
Discovered (year) | 1964 | 1974 |
Atomic number | 104 | 106 |
1↓Group name | Transition metal | Transition metal |
Oxidation states |
|
|
Electron configuration | [Rn]7s²5f¹⁴6d² | [Rn]7s²5f¹⁴6d⁴ |
Atomic mass (u) | 267.122 | 269.128 |
Standard state | Solid | Solid |
Symbol | Rf | Sg |