Difference between revisions of "Rutherfordium"
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|atomic mass= 267 | |atomic mass= 267 | ||
Latest revision as of 21:42, 11 October 2022
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| General properties | |||||
|---|---|---|---|---|---|
| Name, symbol | Rutherfordium, Rf | ||||
| Rutherfordium in the periodic table | |||||
| |||||
| Atomic number | 104 | ||||
| Standard atomic weight (Ar) | 267 | ||||
| Group, block | 4; d-block | ||||
| Period | period 7 | ||||
| Electron configuration | [Rn] 5f14 6d2 7s2 | ||||
per shell | 2, 8, 18, 32, 32, 10, 2 | ||||
| Physical properties | |||||
| Phase | Solid (predicted) | ||||
| Density near r.t. | 23.2 g/cm3 (predicted) | ||||
| Atomic properties | |||||
| Oxidation states | +2, +3, +4 (predicted) | ||||
| energies |
1st: 580 kJ/mol 2nd: 1390 kJ/mol (predicted) 3rd: 2300 kJ/mol (predicted) (more) | ||||
| Atomic radius | calculated: 150 pm | ||||
| Covalent radius | 157 pm (estimated) | ||||
| Miscellanea | |||||
| Crystal structure | | ||||
| CAS Registry Number | 53850-36-5 | ||||
| History | |||||
| Discovery | Joint Institute for Nuclear Research (1964) | ||||
| Named by | after Ernest Rutherford | ||||
Rutherfordium (Rf) is a highly radioactive transactinide. It is near to impossible to make or own this element in a hobby laboratory and even most professional laboratories.
Contents
Predicted properties
Chemical
Rutherfordium is thought to have similar chemical properties as other group 4 elements.
Physical
Rutherfordium should be a very heavy metal.
Availability & Isolation
Since it has only been produced in minute amounts in advanced nuclear research facilities, any amount of Rf can only be used for a few minutes or hours in limited nuclear research.
Handling
Safety
If one somehow manages to make this, it will quickly decay, releasing a LOT of radiation, and it's decay products will release even more radiation, as well as generating a lot of heat.
Storage
If one manages to somehow acquire this, the sample should be stored in a container with very thick lead walls.
Disposal
Given the minute amounts of rutherfordium produced so far, no disposal is necessary.
