Actinium is the first member of the actinoids family.
After the IUPAC nomenclature lanthanum is a lanthanoid and actinium is an actinoid.
Actinium is the first member of the actinoids family.
Lanthanum and lutetium: lantanides group Actinium and lawrentium: actinides group
Actinium (Ac) is a chemical element.Actinoids is the name of the radioactive elements family which contain actinium.
Actinium belongs to the actinide family, which is a group of elements located in the periodic table below the lanthanide series. These elements are all radioactive and have important applications in nuclear energy and medicine.
Lanthanum and lutetium are members of the lanthanoids family.Actinium and lawrencium are members of the actinoids family.
Actinium is a member of the actinoids family with the atomic number 89.
Actinuim is a member of the family of actinides.
Actinium is a member of the actinides family; actinium is a natural chemical element, metal, solid, extremely radioactive.
Actinuim is a member of the family of actinides. Actinium is a solid metal, radioactive with the atomic number 89.
actinium
Actinium belongs to actinides. It has atomic no. 89