Element: curium |
Name : curium |
Symbol : Cm |
Atomicnumber : 96 |
Relativeatomicmass : [ 247 ] (longest lived isotope) |
Standardstate : solid at 298 K |
Appearance : silver |
Classification : Metallic |
Groupinperiodictable : None |
Groupname : Actinoid |
Periodinperiodictable : 7 (actinoid) |
Blockinperiodictable : f |
Shellstructure : 2.8.18.32.25.9.2 |
CASRegistry : 7440-51-9 |
Description : Curium is a hard, brittle, radioactive silvery metal. It does not occur in nature and must be made in a nuclear reactor by neutron capture reactions from plutonium and americium isotopes. |