96Cm247.07035
Curium
Actinide
Solid at STP
Period 7Block FDiscovered 1944
[Rn]7s2 5f7 6d1
Curium is a transuranic radioactive chemical element with symbol Cm and atomic number 96. This element of the actinide series was named after Marie and Pierre Curie – both were known for their research on radioactivity. Curium was first intentionally produced and identified in July 1944 by the group of Glenn T. Seaborg at the University of California, Berkeley.
📖 Read more on Wikipedia →Atomic Properties
| Atomic Number | 96 |
| Atomic Mass | 247.07035 u |
| Electron Configuration | [Rn]7s2 5f7 6d1 |
| Oxidation States | +3 |
| Electronegativity | 1.3 (Pauling) |
| Atomic Radius | 245 pm |
| Ionization Energy | 6.02 eV |
| Block | F |
Physical Properties
| Appearance | silvery metallic, glows purple in the dark |
| Standard State | Solid |
| Melting Point | 1618 K (1344.8 °C) |
| Boiling Point | 3400 K (3126.8 °C) |
| Density | 13.51 g/cm³ |
| CPK Color | #785CE3 |
Classification
| Category | Actinide |
| Group Block | Actinide |
| Period | 7 |
| Block | F |
Discovery
| Year Discovered | 1944 |
| Discovered By | Glenn T. Seaborg |
| Electron Shells | 2, 8, 18, 32, 25, 9, 2 |