Thulium
[Picture of Display box]
Contributor: Be the contributor for this element!
About the Display:
About the Contributor:
Back to the Periodic Table
听
| <Previous element-| | |-Onward to the next element!> |
听
Symbol: Tm
Atomic Number: 69
Atomic Mass: 168.934 u
Electron Configuration:听[Xe] 4f136s2听
Year Discovered: 1879
Discovered By: Per Teodor Cleve