Sanakirja
Tekoälykääntäjä
Kuvat
2
Synonyymit
- (vanhentunut)actinium-K
- (vanhentunut)virginium
- eka-caesium
Määritelmät
Substantiivi
- The chemical element (symbol Fr) with an atomic number of 87. It is an intensely radioactive alkali metal that is not found in nature.
- (countable) A single atom of this element.
Esimerkit
- The most elusive element of all, however, appears to be francium, which is so rare that it is thought that our entire planet may contain, at any given moment, fewer than twenty francium atoms.
Taivutusmuodot
| Monikko | franciums |
The chemical element (symbol Fr) with an atomic number of 87. It is an intensely radioactive alkali metal that is not found in nature.
Body-centered cubic crystal structure for francium