Isotopes
Isotope |
Half-Life |
Mode of Decay |
| 238Cm | ||
| 239Cm | ||
| 240Cm | 27 hours | a to 236Pu; EC to 240Am; SF |
| 241Cm | 32.8 days | a to 237Pu; EC to 241Am |
| 242Cm | 162.8 days | a to 238Pu; SF |
| 243Cm | 28.5 years | a to 239Pu; EC to 243Am |
| 244Cm | 18.11 years | a to 240Pu; SF |
| 245Cm | 8,500 years | a to 241Pu; SF |
| 246Cm | 4,780 years | a to 242Pu; SF |
| 247Cm | 1.56 x 107 years | a to 243Pu |
| 248Cm | 348,000 years | a to 244Pu; SF |
| 249Cm | 1.1 hour | b- to 249Bk |
| 250Cm | 9,700 years | a to 246Pu; b- to 250Bk; SF |
Note: There are only 14 known isotopes, each with its own distinct characteristics. The most stable isotope of them all is Cm 247, while other such as are great conductors of electricity.