| Name | terbium |
|---|---|
| Symbol | Tb |
| Atomic Weight | 158.92534 |
| Atomic Number | 65 |
| CAS ID | 7440-27-9 |
| Group Number | |
| Group Name | Lanthanoid |
| Period Number | 6 |
| Origin of Name | Named after Ytterby, Sweden. |
| Year Discovered | 1843 |
| Discovery Credits | Discovered by C. G. Mosander at Stockholm, Sweden. |
| Class | Metallic |
| Color | Silvery White |
| Standard State | Solid at 77 F & 298 K |
| Description | Silvery white metal, rare member of the lanthanide (rare earth) group. Slowly oxidized by
air, reacts with cold water, Used in solid state devices and lasers. Diagnostic tests: |