Atomic Number 68 (Noun)
Meaning
A trivalent metallic element of the rare earth group; occurs with yttrium.
Classification
Nouns denoting substances.
Examples
- Atomic number 68 is the Erbium, which is the seventh rare earth element in the Lanthanide series.
- Er with an atomic number 68 occurs in small amounts in some types of granite.
- Erbium with atomic number 68 is commonly used for colouring of glasses, glass ceramics, laser and Yttrium.
- The atomic number 68 element may be obtained from the orthite mineral monazite that also contains other rare earths like Yttrium.
- A more uncommon earth element, Erbium possessing atomic number 68 is trivalent in nature.