thulium
Tm
69
atomic number
69
chemical element of
chemistry
random
Stopped drain
symbol
Tm
tags
chemical element
Wikidata
https://www.wikidata.org/wiki/Q1853
Wikimedia
https://commons.wikimedia.org/wiki/Category:Thulium
Wikipedia
https://en.wikipedia.org/wiki/Thulium
➡️
ytterbium
Yb
70
⬅️
erbium
Er
68
