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atomic number 63 (0 synonym found)
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atomic number 13 · atomic number 23 · atomic number 3 · atomic number 33 · atomic number 43 · atomic number 53
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Definition of atomic number 63:
(n) :
a bivalent and trivalent metallic element of the rare earth group
Definition of atomic number 63:
(n) :
a bivalent and trivalent metallic element of the rare earth group
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