Cn
Copernicium
Z 112 285.0 g/molTransition Metal Radioactive
| 276Cn | 164 | 276.1614 | 150,360.0 | --- | 100.0 µs | 0+ | α→272Ds SF | --- |
| 277Cn | 165 | 277.1635 | 152,330.0 | --- | 790.0 µs | --- | α→273Ds(100%) | 1996 |
| 278Cn | 166 | 278.1641 | 152,840.0 | --- | 2.0 ms | 0+ | α→274Ds SF | --- |
| 279Cn | 167 | 279.1664 | 155,020.0 | --- | 60.0 µs | --- | α→275Ds SF | --- |
| 280Cn | 168 | 280.1671 | 155,650.0 | --- | 5.0 ms | 0+ | α→276Ds SF | --- |
| 281Cn | 169 | 281.1696 | 157,950.0 | --- | 180.0 ms | --- | α→277Ds(100%) SF | 2010 |
| 282Cn | 170 | 282.1705 | 158,830.0 | --- | 1.1 ms | 0+ | SF(100%) α→278Ds | 2004 |
| 283Cn | 171 | 283.1732 | 161,340.0 | --- | 4.7 s | --- | α→279Ds(81%) SF(19%) | 2004 |
| 284Cn | 172 | 284.1744 | 162,420.0 | --- | 102.0 ms | 0+ | SF(100%) | 2004 |
| 285Cn | 173 | 285.1772 | 165,090.0 | --- | 30.0 s | --- | α→281Ds(100%) | 2004 |
| 285mCn | 173 | 285.1778 | 165,620.0 | --- | 15.0 s | --- | α→281Ds(100%) | 2012 |
| 286Cn | 174 | 286.1787 | 166,450.0 | --- | 30.0 s | 0+ | α→282Ds(100%) SF | 2016 |
| 287Cn | 175 | 287.1818 | 169,370.0 | --- | 30.0 s | --- | α→283Ds SF | --- |
| 288Cn | 176 | 288.1835 | 170,930.0 | --- | 10.0 s | 0+ | α→284Ds SF | --- |