Actinium is a solid metal.
The official chemical name is exactly actinium.
The chemical symbol of actinium is Ac.
Actinium is a trivalent chemical element.
Actinium is a trivalent chemical element.
Actinium, with the chemical symbol Ac, is the chemical element with the atomic number 89.
The chemical symbol of actinium is Ac.
Actinium is a natural chemical element, radioactive; actinium is a decay product of uranium.
Actinium is a natural chemical element, it is not a man-made element.
Actinium is a natural chemical element but also can be prepared in laboratory.
Actinium is a natural chemical element but also can be prepared in laboratory.
Ac
any nickname (and generally for the chemical elements) for actinium