atomic number 71
Definition
Noun: - A trivalent metallic element of the rare earth group; usually occurs in association with yttrium: This is the scientific definition for the chemical element with the symbol Lu and atomic number 71, known as lutetium. It is a hard, dense, silvery-white metal that is the last element in the lanthanide series.
Usage Examples
- Noun:
- Lutetium, atomic number 71, is used in some cancer treatments.
- The sample was found to contain traces of atomic number 71.
- In the periodic table, atomic number 71 is placed between ytterbium and hafnium.
Advanced Usage
- In scientific contexts: The term "atomic number 71" is primarily used in technical, chemical, and academic writing to specify the element precisely by its fundamental property (the number of protons in its nucleus), rather than its common name.
- The detector is calibrated to identify isotopes based on mass, not just atomic number 71.
Variants and Related Words
- Lutetium (Lu): The common name for the element with atomic number 71.
- Lanthanide: The series of metallic elements to which atomic number 71 belongs.
- Rare-earth element: The broader category that includes atomic number 71 and other lanthanides, plus scandium and yttrium.
Synonyms
- Lutetium: The direct synonym and the name of the element.
- Lu: The chemical symbol for atomic number 71.
Related Phrases
- Element 71: An alternative, less formal way to refer to atomic number 71.
- The properties of element 71 were difficult to isolate.
Noun
-
a trivalent metallic element of the rare earth group; usually occurs in association with yttrium
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