| Name | ytterbium |
|---|---|
| Symbol | Yb |
| Atomic Weight | 173.04 |
| Atomic Number | 70 |
| CAS ID | 7440-64-4 |
| Group Number | |
| Group Name | Lanthanoid |
| Period Number | 6 |
| Origin of Name | Named after Ytterby, Sweden. |
| Year Discovered | 1878 |
| Discovery Credits | Discovered by J. C. G. De Marignac at Geneva, Switzerland. |
| Class | Metallic |
| Color | Silvery White |
| Standard State | Solid at 77 F & 298 K |
| Description | Soft, silvery-white metal of the lanthanide (rare earth) group. Slowly oxidized by air, reacts with water. Some use in stress gauges. Diagnostic tests: |