96Solid
Cm 247 Atomic mass · uActinides
Curium
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.
Discovery 1944 (Glenn T. Seaborg)
K2L8M18N32O25P9Q2
Physical properties
Values for the element in its standard state.
- Density
- 13.51g/cm³
- Melting point
- 1,618K
- Boiling point
- 3,383K
- Atomic radius
- Not available
- Bonding type
- Metallic
- Molar heat
- Not available
Inside the atom
Electron arrangement and the energy behind its behavior.
Full electron configuration
1s, 2 electrons; 2s, 2 electrons; 2p, 6 electrons; 3s, 2 electrons; 3p, 6 electrons; 3d, 10 electrons; 4s, 2 electrons; 4p, 6 electrons; 4d, 10 electrons; 5s, 2 electrons; 5p, 6 electrons; 4f, 14 electrons; 5d, 10 electrons; 6s, 2 electrons; 6p, 6 electrons; 5f, 7 electrons; 6d, 1 electrons; 7s, 2 electrons;
[Rn] represents 86 core electrons. The full view shows them explicitly.
96 electrons Orbital order preserved from source
- Electronegativity
- 1.3Pauling scale
- First ionization energy
- 581kJ/mol
- Electron affinity
- Not available
- Van der Waals radius
- Not available
Cm CuriumAtomic number 96
581kJ/mol
Atomic numberGaps indicate unavailable data
About curium
- Appearance
- Silvery metallic, glows purple in the dark
- Discovery
- 1944 (Glenn T. Seaborg)
- Data source
- Read the reference
A missing value means it is unavailable in this reference dataset. Values can vary with measurement method and conditions.