Wiktionary:Periodesystem/Engelsk
Udseende
Se definitionen af periodesystem af elementerne her.
| alkali metals | alkaline earth metals | transition metals | lanthanoids | actinoids |
| other metals | metalloids | nonmetals | halogens | noble gases |
| Elements with natural isotopes (which exists since Earth was formed) | Isotopes issued from decay | Synthetic elements | No isotope synthetized for those elements yet |
| ZEl : solid | ZEl : liquid | ZEl : gas | ZEl : unknown |
You can find more information about the properties of these elements at Wikipedia's Periodic table.