| Name | americium |
|---|---|
| Symbol | Am |
| Atomic Weight | 246.06 |
| Atomic Number | 95 |
| CAS ID | 7440-35-9 |
| Group Number | |
| Group Name | Actinoid |
| Period Number | 7 |
| Origin of Name | Named after the American Continent |
| Year Discovered | 1944 |
| Discovery Credits | Discovered by G. T. Seaborg, R. A. James, I. O. Morgan, and A. Ghiorso at Chicago, IL., USA. |
| Class | Metallic |
| Color | Silvery White |
| Standard State | Solid at 77 F & 298 K |
| Description | Radioactive, silvery metal which does not occur naturally. Attacked by air, steam, and acids, but not alkalis. |