Input interpretation
copernicium (chemical element)
Periodic table location
Periodic table location
Basic elemental properties
![atomic symbol | Cn atomic number | 112 short electronic configuration | [Rn]7s^25f^146d^10 Aufbau diagram | 6d 5f 7s block | d group | 12 period | 7 atomic mass | 285 u (unified atomic mass units) (atomic mass number given for longest-lived known isotope) half-life | 40 minutes](../image_source/58171b332e7683ac031dd2970f431957.png)
atomic symbol | Cn atomic number | 112 short electronic configuration | [Rn]7s^25f^146d^10 Aufbau diagram | 6d 5f 7s block | d group | 12 period | 7 atomic mass | 285 u (unified atomic mass units) (atomic mass number given for longest-lived known isotope) half-life | 40 minutes
Atomic properties
term symbol | ^1S_0 (electronic ground state properties)
Abundances
solar abundance | 0 mass% meteorite abundance | 0 mass% crust abundance | 0 mass% ocean abundance | 0 mass% human abundance | 0 mass% solar molar abundance | 0 mol% meteorite molar abundance | 0 mol% ocean molar abundance | 0 mol% crust molar abundance | 0 mol% human molar abundance | 0 mol%
Nuclear properties
half-life | 40 min lifetime | 58 min (rank: 1st) specific radioactivity | 603723 TBq/g decay mode | alpha emission nuclear spin | Cn-277: 3/2^+ | Cn-278: 0^+ | Cn-280: 0^+ | Cn-281: 3/2^+ | Cn-282: 0^+ | Cn-284: 0^+ | Cn-285: 5/2^+ unstable isotopes | Cn-285 (40 min) | Cn-283 (4.17 min) | Cn-284 (31 s) | Cn-282 (30 s) | Cn-281 (10 s) | Cn-280 (1 s) | Cn-279 (100 ms) | Cn-278 (10 ms) | Cn-277 (1.1 ms)
Identifiers
CAS number | 54084-26-3