Atomic Number 71 (Noun)
Meaning
A trivalent metallic element of the rare earth group; usually occurs in association with yttrium.
Classification
Nouns denoting substances.
Examples
- Lutetium, with an atomic number of 71, belongs to the lanthanide series in the periodic table of elements.
- The metal is silver-white and is considered to be a rare earth element with the atomic number 71.
- Lutetium is a hard, silvery-white, somewhat toxic metal with atomic number 71 that is extremely difficult to shape.
- The element has the atomic number 71 and is often used to make catalysts that are necessary for the production of some plastics.
- Lutetium is the chemical element with the atomic number 71 and the symbol Lu in the periodic table.