aktinium
| Enkelvoud | Meervoud |
|---|---|
| aktinium | — |
- ak•ti•ni•um
- (chemie) Chemiese element in die periodieke tabel met simbool Ac en atoomgetal 89.
- Aktinium is 'n silwerige en uiters radioaktiewe metallieke element.
Meer inligting
- Sien Wikipedia vir meer inligting oor aktinium.
| H | He | |||||||||||||||||
| Li | Be | B | C | N | O | F | Ne | |||||||||||
| Na | Mg | Al | Si | P | S | Cl | Ar | |||||||||||
| K | Ca | Sc | Ti | V | Cr | Mn | Fe | Co | Ni | Cu | Zn | Ga | Ge | As | Se | Br | Kr | |
| Rb | Sr | Y | Zr | Nb | Mo | Tc | Ru | Rh | Pd | Ag | Cd | In | Sn | Sb | Te | I | Xe | |
| Cs | Ba | La | * | Hf | Ta | W | Re | Os | Ir | Pt | Au | Hg | Tl | Pb | Bi | Po | At | Rn |
| Fr | Ra | Ac | ** | Rf | Db | Sg | Bh | Hs | Mt | Ds | Rg | Cn | Nh | Fl | Mc | Lv | Ts | Og |
| * Lantaniede | Ce | Pr | Nd | Pm | Sm | Eu | Gd | Tb | Dy | Ho | Er | Tm | Yb | Lu | ||||
| ** Aktiniede | Th | Pa | U | Np | Pu | Am | Cm | Bk | Cf | Es | Fm | Md | No | Lr | ||||
| Alkalimetale | Aardalkalimetale | Lantaniede | Aktiniede | Oorgangsmetale |
| Hoofgroepmetale | Metalloïdes | Niemetale | Halogene | Edelgasse |