Notation. Nuclides are written with the mass number as a left superscript (e.g., ²⁹⁰Mc).
Columns. Stable? — Moscovium has no stable isotopes. Half-lives = evaluated values. Decay → daughter(s) shows main branches. Radiation: α, SF (spontaneous fission). Origin: all isotopes are synthetic. Uses: R research only.
Primary data spine: evaluated Isotopes of moscovium (ENSDF/NUBASE 2020).
Table — ground states
| Nuclide | Z | A | Stable? | Half-life | Decay → daughter(s) | Radiation | Origin | Notes & Uses |
|---|---|---|---|---|---|---|---|---|
| ²⁸⁷Mc | 115 | 287 | No | ~46 ms | α → ²⁸³Nh | α | Fusion-evap. | R. |
| ²⁸⁸Mc | 115 | 288 | No | ~170 ms | α → ²⁸⁴Nh | α | Synthetic | R. |
| ²⁸⁹Mc | 115 | 289 | No | ~220 ms | α → ²⁸⁵Nh | α | Synthetic | R. |
| ²⁹⁰Mc | 115 | 290 | No | 0.65 s | α → ²⁸⁶Nh | α | Synthetic | R. |
| ²⁹¹Mc | 115 | 291 | No | 0.97 s | α → ²⁸⁷Nh | α | Synthetic | R. |
| ²⁹²Mc | 115 | 292 | No | 1.0 s | α → ²⁸⁸Nh | α | Synthetic | R. |
| ²⁹³Mc | 115 | 293 | No | 6.0 s | α → ²⁸⁹Nh; SF | α; SF | Synthetic | Longest-lived confirmed Mc isotope. |
| ²⁹⁴Mc | 115 | 294 | No | 0.9 s | α → ²⁹⁰Nh | α | Synthetic | Observed in Ca-48 + Am-243 fusion. |
Natural isotopes of moscovium
- None.
- All isotopes are synthetic, first produced in 2003 at the Joint Institute for Nuclear Research (Dubna, Russia) in collaboration with Lawrence Livermore National Laboratory (LLNL, USA) by bombarding americium-243 with calcium-48.
- Officially named Moscovium in 2016, after Moscow Oblast.
Applied & research highlights
- ²⁹³Mc (6 s): the longest-lived isotope, central in decay chains leading to nihonium (Z = 113) and down toward known isotopes.
- The Dubna–LLNL discovery chain of ²⁸⁹–²⁹³Mc was crucial in confirming elements 113 (Nh), 115 (Mc), 117 (Ts), and 118 (Og).
- Chemistry predictions: Mc is in Group 15 (like Bi, Sb), but relativistic effects may alter its behavior; it could exhibit noble-metal-like properties.
- No practical applications beyond fundamental research — production is limited to a few atoms.
Totals — Moscovium (Z = 115)
- Ground-state isotopes listed: 8 (A = 287–294).
- Stable: 0.
- Unstable: 8.
Running cumulative totals (through Mc):
From Fl ledger: ≥ 3 333 total, 252 stable, ≥ 3 080 unstable.
Add Mc (+8 total, +0 stable, +8 unstable) → ≥ 3 341 total, 252 stable, ≥ 3 088 unstable.
Sources
- Isotopic list (A = 287–294): Isotopes of moscovium (ENSDF/NUBASE 2020).
- Discovery (Dubna–LLNL, 2003): Ca-48 + Am-243 fusion.
- IUPAC recognition (2016): naming Moscovium (after Moscow region).
Next element: Livermorium — Lv (Z = 116).