Moscovium (Mc)
post-transition-metalExpected to be a Solid
Standard Atomic Weight
[289]Electron configuration
[Rn] 7s2 7p3 5f14 6d10(predicted)Melting point
396.85 °C (670 K)Boiling point
1126.85 °C (1400 K)Density
1.350000e+4 kg/m³Oxidation states
+1, +3Electronegativity (Pauling)
N/AIonization energy (1st)
Discovery year
2004Atomic radius
187 pmDetails
Moscovium is a synthetic transactinide element in group 15, below bismuth. It has been made only atom by atom in heavy-ion fusion experiments, and all confirmed isotopes are highly radioactive and short-lived. Its chemistry has not been directly characterized in bulk; relativistic calculations predict a very heavy p-block metal with chemistry differing from lighter pnictogens, probably favoring the +1 and +3 oxidation states more than a stable +5 state.
Moscovium does not occur naturally in the Earth’s crust. The name moscovium and the symbol Mc, are the accepted ones for element 115. The name is in recognition of the Moscow region and honors the ancient Russian land that is home to the Joint Institute for Nuclear Research (JIRN), where the discovery experiments were conducted using the Dubna gas filled recoil separator in combination with the heavy ion accelerator capabilities of the Flerov Laboratory of Nuclear Reactions.
48Ca and 243Am were bombarded together in a cyclotron during a series of experiments from 14 July to 10 August 2003 (Fig. IUPAC.115.1). In February 2004, the results from these experiments were released in a report that stated “ununpentium” had been synthesized. This initial name means “115” in the IUPAC systematic naming scheme, which combines Latin and Greek names to produce un-un-pentium for 115. Moscovium has no known isotopic applications aside from scientific research.
On February 2, 2004, scientists working at the Joint Institute for Nuclear Research in Dubna, Russia, along with scientists from the U.S. Department of Energy's Lawrence Livermore National Laboratory and Oak Ridge National Laboratory, announced the creation of moscovium. In experiments performed between July 14, 2003 and August 10, 2003, atoms of americium-243 were bombarded with ions of calcium-48 using a device called a cyclotron. This produced one atom of moscovium-287 and three atoms of moscovium-288. All four atoms quickly decayed into other elements. Moscovium's most stable isotope, moscovium-289, has a half-life of about 220 milliseconds. It decays into nihonium-285 through alpha decay.
On Novemer 28th, 2016, element 115 was named Moscovium with the symbol Mc. Moscovium is the Moscow region of Russia, which is home to much of Russia’s superheavy element research. Muscovium was discovered by together by the Joint Institute for Nuclear Research, Dubna (Russia), Oak Ridge National Laboratory (USA), Vanderbilt University (USA) and Lawrence Livermore National Laboratory (USA).
Images
Properties
Physical
Chemical
Thermodynamic
N/A
Nuclear
Abundance
N/A
Reactivity
N/A
Crystal Structure
N/A
Electronic Structure
Identifiers
Electron Configuration Predicted
——Electron configuration data not available for this ion.
Atomic model
Isotopes change neutron count, mass, and stability — not the electron configuration of a neutral atom.
N/A
Schematic atomic model, not to scale.
Atomic Fingerprint
Emission / Absorption Spectrum
Isotope Distribution
No stable isotopes.
| Mass number | Atomic mass (u) | Natural abundance | Half-life |
|---|---|---|---|
| 290 Radioactive | 290.19598 ± 0.00073 | N/A | 840 ms |
| 289 Radioactive | 289.19363 ± 0.00089 | N/A | 410 ms |
| 288 Radioactive | 288.19274 ± 0.00062 | N/A | 177 ms |
| 287 Radioactive | 287.1907 ± 0.00052 | N/A | 60 ms |
| 292 Radioactive | 292.200323 ± 0.000751 | N/A | 5 seconds |
Phase / State
Reason: 371.9 °C below melting point (396.85 °C)
Schematic, not to scale
Phase transition points
Density
At standard conditions
At standard conditions
Crystal structure data not available
Isotopes (5)
| Mass number | Atomic mass (u) | Natural abundance | Half-life | Decay mode | |
|---|---|---|---|---|---|
| 290 Radioactive | 290.19598 ± 0.00073 | N/A | 840 ms | α =100% | |
| 289 Radioactive | 289.19363 ± 0.00089 | N/A | 410 ms | α =100% | |
| 288 Radioactive | 288.19274 ± 0.00062 | N/A | 177 ms | α =100% | |
| 287 Radioactive | 287.1907 ± 0.00052 | N/A | 60 ms | α =100% | |
| 292 Radioactive | 292.200323 ± 0.000751 | N/A | 5 seconds | α ?SF ? |
Extended Properties
Covalent Radii (Extended)
Numbering Scales
Polarizability & Dispersion
Advanced Reference Data
Isotope Decay Modes (8)
| Isotope | Mode | Intensity |
|---|---|---|
| 287 | A | 100% |
| 288 | A | 100% |
| 289 | A | 100% |
| 290 | A | 100% |
| 291 | A | — |
| 291 | SF | — |
| 292 | A | — |
| 292 | SF | — |
Additional Data
Estimated Crustal Abundance
The estimated element abundance in the earth's crust.
Not Applicable
References (1)
- [5] Moscovium https://education.jlab.org/itselemental/ele115.html
Estimated Oceanic Abundance
The estimated element abundance in the earth's oceans.
Not Applicable
References (1)
- [5] Moscovium https://education.jlab.org/itselemental/ele115.html
References
(8)
Data deposited in or computed by PubChem
The half-life and atomic mass data was provided by the Atomic Mass Data Center at the International Atomic Energy Agency.
Element data are cited from the Atomic weights of the elements (an IUPAC Technical Report). The IUPAC periodic table of elements can be found at https://iupac.org/what-we-do/periodic-table-of-elements/. Additional information can be found within IUPAC publication doi:10.1515/pac-2015-0703 Copyright © 2020 International Union of Pure and Applied Chemistry.
The information are cited from Pure Appl. Chem. 2018; 90(12): 1833-2092, https://doi.org/10.1515/pac-2015-0703.
Thomas Jefferson National Accelerator Facility (Jefferson Lab) is one of 17 national laboratories funded by the U.S. Department of Energy. The lab's primary mission is to conduct basic research of the atom's nucleus using the lab's unique particle accelerator, known as the Continuous Electron Beam Accelerator Facility (CEBAF). For more information visit https://www.jlab.org/
The periodic table at the LANL (Los Alamos National Laboratory) contains basic element information together with the history, source, properties, use, handling and more. The provenance data may be found from the link under the source name.
The periodic table contains NIST's critically-evaluated data on atomic properties of the elements.
This section provides all form of data related to element Moscovium.