104Rf267.122
Rutherfordium
Transition Metal
Solid at STP
Period 7Group 4Block DDiscovered 1964
[Rn]7s2 5f14 6d2
Rutherfordium is a chemical element with symbol Rf and atomic number 104, named in honor of physicist Ernest Rutherford. It is a synthetic element (an element that can be created in a laboratory but is not found in nature) and radioactive; the most stable known isotope, 267Rf, has a half-life of approximately 1.3 hours. In the periodic table of the elements, it is a d - block element and the second of the fourth - row transition elements.
📖 Read more on Wikipedia →Atomic Properties
| Atomic Number | 104 |
| Atomic Mass | 267.122 u |
| Electron Configuration | [Rn]7s2 5f14 6d2 |
| Oxidation States | +4 |
| Block | D |
Physical Properties
| Standard State | Solid |
| CPK Color | #CC0059 |
Classification
| Category | Transition Metal |
| Group Block | Transition metal |
| Period | 7 |
| Group | 4 |
| Block | D |
Discovery
| Year Discovered | 1964 |
| Discovered By | Joint Institute for Nuclear Research |
| Electron Shells | 2, 8, 18, 32, 32, 10, 2 |