Promethium (Pm)
| Symbol | Pm |
| Atomic Number | 61 |
| Atomic Weight | (145) |
| Group | (Lanthanoids) |
| Period | 6 |
| Block | f |
Physical Properties
| Density | 7.26 g/cm3 |
| Atomic Volume | 22.4 cm3/mole |
| Atomic Radius | angstroms |
| Covalent Radius | pm |
| Radioactive | Yes |
States
| Melting Point | 1042.0 °C |
| Boiling Point | 3000.0 °C |
| Heat Of Fusion | kJ/mole |
| Heat Of Vaporization | kJ/mole |
Energy
| Electronegativity | (Pauling Scale) |
| Electron Affinity | kJ/mol |
| 1st Ionization Energy | 540 kJ/mol |
| Specific Heat Capacity | J g−1 K−1 |
| Thermal Conductivity | 17.9 W·m−1·K−1 |
Electrons and Oxidation
| Oxidation States | 3 |
| Electrons Per Shell | 2 8 18 23 8 2 |
| Electron Configuration | [Xe] 4f5 6s2 |
| 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f5 6s2 |
Translations
| English | Promethium | |
| Deutsch | Promethium | |
| Lëtzebuergesch | Promethium | |
| Nederlands | Promethium | |
| Afrikaans | Promethium | |
| Frysk | Promethium | |
| Dansk | Promethium | |
| Svenska | Prometium | |
| Norsk | Promethium | |
| Íslenska | Prmetn or Prmen | |
| Føroysk | Promethium | |
| Latin | Promethium | |
| Français | Promthium | |
| Español | Promecio | |
| Catalana | Prometi | |
| Occitana | Prometi | |
| Português | Promcio | |
| Galego | Prometio | |
| Italiano | Promezio | |
| Furlan | Prometi | |
| Român | Prome?iu | |
| Moldavian | Prome?iu | |
| Armãneashte | Prometiumu | |
| Русский | ???????? | |
| Українска | ???????? | |
| Byelorussian | ???????? | |
| Polska | Promet | |
| Kaszëbsczi | Promet | |
| Čech | Promethium | |
| Slovenský | Promethium | |
| Slovenščina | Prometij | |
| Hrvatska | Prometij | |
| Српски | ???????j?? | |
| Bosnian | Prometij | |
| Македонски | ????????? | |
| Български | ???????? | |
| Lietuviškai | Prometis | |
| Lao | Prometijs | |
| Sudovian | Pr?metijan | |
| Cymraeg | Promethiwm | |
| Gaeilge na hÉireann | Prmitiam | |
| Gàidhlig na h | Promitiam | |
| Gaelg Vanninagh | Promaihum | |
| Cornish | Promethyum | |
| Brezhoneg | Prometiom | |
| Ελληνική | ????????? | |
| Shqip | Promet | |
| Ossetian | ???????? | |
| Euskera | Prometioa | |
| Georgian | ?????????? | |
| Suomi | Prometium | |
| Eesti | Promeetium | |
| Magyar | Promcium | |
| Türkçe | Prometyum | |
| Kazakh | ???????? | |
| Uzbek | ???????? | |
| Tajik | Prometi' | |
| Mongolian | ??????? | |
| 日本語 | ?????? [puromechiumu] | |
| 中国话 | ? | |
| ไทย | ?????????? | |
| Vietnamese | Prometi | |
| Bahasa Melayu | Prometium | |
| العربيه | ????????? | |
| Il-Malti | Promizjum | |
| עברית | ???????? | |
| Esperanto | Promecio |
History
- Discovered In
- 1945
- Discovered By
- J. A. Marinsky, Lawrence Glendenin, Charles D. Coryell
- Discovered At
- United States
- Word Origin
- Named after "Prometheus" in Greek mythology, who stole fire from the gods