ATOMIC NUMBER 57
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Definitions
There is 1 meaning of the phrase
Atomic Number 57.
Atomic Number 57 - as a noun
A white soft metallic element that tarnishes readily; occurs in rare earth minerals and is usually classified as a rare earth
Synonyms (Exact Relations)
la2lanthanum14Example Sentences
"Lanthanum is a chemical element with atomic number 57."
"The atomic number 57 indicates that a neutral lanthanum atom has 57 electrons."
"Elements with atomic number 57 are often used in the production of high-tech devices."
"The atomic number 57 corresponds to the lanthanum symbol La."
"Lanthanum was discovered by Carl Gustav Mosander in 1839 and assigned atomic number 57."
