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Atomic Number 57 (Noun)

Meaning

A white soft metallic element that tarnishes readily; occurs in rare earth minerals and is usually classified as a rare earth.

Classification

Nouns denoting substances.

Examples

  • Lanthanum, also known as atomic number 57, is a chemical element with the symbol La and atomic number 57.
  • The atomic number 57 is a key identifier for the element lanthanum, which is a soft, silvery-white metal.
  • In the periodic table, atomic number 57 is assigned to the element lanthanum, a member of the rare earth elements.
  • The discovery of atomic number 57, also known as lanthanum, is attributed to Swedish chemist Carl Gustaf Mosander in 1839.
  • The atomic number 57 is a unique identifier for the element lanthanum, which is used in specialized glasses, ceramics, and catalysts.

Synonyms

  • La
  • Lanthanum

Hypernyms

  • Metallic Element
  • Metal
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