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Terbium
? TBD
Chemical element with atomic number 65 (Tb)
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Wikipedia

Terbium is a chemical element; it has symbol Tb and atomic number 65. It is a silvery-white, rare earth metal that is malleable and ductile. The ninth member of the lanthanide series, terbium is a fairly electropositive metal that reacts with water, evolving hydrogen gas. Terbium is never found in nature as a free element, but it is contained in...

Instance of
Chemical element
Part of
Lanthanide
References
Wikidata