Definition of atomic number 63 Atomic number 63
We found 1 definitions of atomic number 63 from 1 different sources.
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What does atomic number 63 mean?
WordNet
Noun |
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| atomic number 63 - a bivalent and trivalent metallic element of the rare earth group | ||
| europium, Eu | ||
| metallic element, metal any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc. | ||
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