lutetium
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Definition
Noun 1. A chemical element: Lutetium is a silvery-white, hard, dense, trivalent metallic element. It is the last element in the lanthanide series (rare earth group) and is typically found in nature alongside the element yttrium. 2. Properties: It is one of the least abundant and most expensive of the rare earth elements. It is relatively stable in air compared to other lanthanides.
Examples of Usage
- Noun:
- Lutetium has atomic number 71 on the periodic table.
- The mineral monazite is a common source for lutetium.
- Scientists are researching the use of lutetium in certain cancer treatments.
Advanced Usage
- In scientific contexts: Lutetium is often discussed in geology, chemistry, and materials science for its specific properties and scarcity.
- The sample was doped with a small amount of lutetium to alter its magnetic properties.
- In technology and medicine: Its radioactive isotope, lutetium-177, is used in targeted radionuclide therapy.
- Lutetium-177 PSMA therapy is a promising treatment for metastatic prostate cancer.
Variants and Related Words
- Lutetium-177 (n): A radioactive isotope of lutetium used in nuclear medicine.
- Lanthanide (n): The series of 15 metallic elements from lanthanum to lutetium, of which lutetium is a member.
- Rare earth element (n): A group of 17 chemically similar elements, including the lanthanides, scandium, and yttrium.
Synonyms
- Lu: The chemical symbol for lutetium.
- Cassiopeium (Cp): An older, mostly obsolete name for the element, primarily used in German-speaking regions historically.
Related Phrases and Compounds
- Lutetium oxide: A compound (Lu₂O₃) used in specialty ceramics and phosphors.
- Lutetium aluminum garnet (LuAG): A synthetic crystal used as a scintillator in detectors.
- Lutetium tantalate (LuTaO₄): A dense material investigated for use in phosphors and radiation detectors.
Noun
- a trivalent metallic element of the rare earth group; usually occurs in association with yttrium