Element: thulium |
Name : thulium |
Symbol : Tm |
Atomicnumber : 69 |
Relativeatomicmass : 168.93422 (2) |
Standardstate : solid at 298 K |
Appearance : silvery white |
Classification : Metallic |
Groupinperiodictable : None |
Groupname : Lanthanoid |
Periodinperiodictable : 6 (lanthanoid) |
Blockinperiodictable : f |
Shellstructure : 2.8.18.31.8.2 |
CASRegistry : 7440-30-4 |
Description : Thulium is the least abundant of the earth elements, and is about as rare as silver, gold, or cadmium. |