All the trivalent lanthanide ions, except lutetium, have unpaired f electrons.
From the en.wikipedia.org
Garnets incorporate the element lutetium when they grow and largely exclude hafnium.
From the scientistatwork.blogs.nytimes.com
Lanthanum will produce long, slender reinforcing grains, while lutetium produces fatter grains.
From the sciencedaily.com
For example, lutetium was named in reference to Paris, France.
From the en.wikipedia.org
Kato said the sea mud was especially rich in heavier rare earths such as gadolinium, lutetium, terbium and dysprosium.
From the guardian.co.uk
Lanthanum tends to replace gadolinium atoms on the material's surface, but lutetium prefers to replace gadolinium in its central layer.
From the newscientist.com
It also incorporates atoms of uranium, lutetium, titanium and other rare earth elements in its crystal structure during growth.
From the scientistatwork.blogs.nytimes.com
The researchers found if they replaced just a few gadolinium atoms with lutetium, the result would be a severe loss in the alloy's ferromagnetism.
From the sciencedaily.com
On the other hand, lutetium was predicted to be less likely to locate next to the grain surface, which allows the grains to grow fatter.
From the sciencedaily.com
More examples
A trivalent metallic element of the rare earth group; usually occurs in association with yttrium
Lutetium is a chemical element with the symbol Lu and atomic number 71. It is in the d-block of the periodic table, not the f-block, but the IUPAC classifies it as a lanthanide. It is one of the elements that traditionally were included in the classification, "rare earths". ...
A metallic chemical element (symbol Lu) with an atomic number of 71