Francium
Da Wikimedia Commons, l'archivio di file multimediali liberi
| en: Francium – de: Francium – fr: Francium – lv: Francijs – ja: フランシウム – ru: Франций - tr: Fransiyum | |||
 symbol: Fr atomic number: 87 chemical series: alkali metals |
|||
 |
|||
|
|
|
||
