After the IUPAC nomenclature lanthanum is a lanthanoid and actinium is an actinoid.
Lanthanum and lutetium: lantanides group Actinium and lawrentium: actinides group
Lanthanum and lutetium are members of the lanthanoids family.Actinium and lawrencium are members of the actinoids family.
promethium
Actinium is the first member of the actinoids family.
Neodymium is a lanthanide.
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.
It is a lanthanide in period 6.
Lutetium is one of the first inner transition series metals, sometimes called "lanthanides" because all of them have chemistry very similar to that of lanthanum, the first member of the series.
There are 15 lanthanides (from lanthanum to lutetium) and 15 actinides (from actinium to lawrencium) in the periodic table. These elements belong to the f-block of the periodic table and have unique properties due to their electron configurations.
Cerium belongs to lanthanoids. Its atomic number is 58.
The rare earth metal samarium is a Lanthanide. Use the links below to check facts and learn more.
The lanthanide, or lanthanoid, series. This is a classification on the periodic table characterized by shared properties of these elements, for example, Holmium and Praseodymium have similar properties. Lanthanide is prefered by the public, lanthanoid is preferred by scientists of IUPAC (International Union of Pure and Applied Chemistry).