The chemical element moscovium is classed as a metal (other). It was discovered in 2003 by teams of scientists led by Yuri Oganessian and Ken Moody.
Data Zone
| Classification: | Moscovium is an ‘other metal’ (presumed) |
| Atomic weight: | (289), no stable isotopes |
| State: | solid (presumed) |
| Melting point: | |
| Boiling point: | |
| Electrons: | 115 |
| Protons: | 115 |
| Neutrons in most abundant isotope: | 174 |
| Electron shells: | 2, 8, 18, 32, 32, 18, 5 |
| Electron configuration: | [Rn] 5f14 6d10 7s2 7p3 |
Reactions, Compounds, Radii, Conductivities
| Specific heat capacity | – |
| Heat of fusion | – |
| Heat of atomization | – |
| Heat of vaporization | – |
| 1st ionization energy | – |
| 2nd ionization energy | – |
| 3rd ionization energy | – |
| Electron affinity | – |
| Minimum oxidation number | – |
| Min. common oxidation no. | – |
| Maximum oxidation number | – |
| Max. common oxidation no. | – |
| Electronegativity (Pauling Scale) | – |
| Polarizability volume | – |
| Reaction with air | – |
| Reaction with 15 M HNO3 | – |
| Reaction with 6 M HCl | – |
| Reaction with 6 M NaOH | – |
| Oxide(s) | – |
| Hydride(s) | – |
| Chloride(s) | – |
| Atomic radius | – |
| Ionic radius (1+ ion) | – |
| Ionic radius (2+ ion) | – |
| Ionic radius (3+ ion) | – |
| Ionic radius (1- ion) | – |
| Ionic radius (2- ion) | – |
| Ionic radius (3- ion) | – |
| Thermal conductivity | – |
| Electrical conductivity | – |
| Freezing/Melting point: | – |
Illustration of an accelerated calcium ion speeding into collision with an americium nucleus. Fusion of these nuclei produces moscovium. Image: LLNL.
Heavy elements 113 and 115 have been made by combining calcium-48 and amercium-243. Image: LLNL.
Discovery of Moscovium
Research scientists at the Joint Institute for Nuclear Research in Dubna, Russia and the Lawrence Livermore National Laboratory (LLNL), California first made element 115, moscovium, in Dubna, Russia in 2003. The work was a collaboration between science teams led by Yuri Oganessian and Ken Moody.
The discovery was formally accepted on December 30, 2015 by The International Union of Pure and Applied Chemistry (IUPAC) and The International Union of Pure and Applied Physics (IUPAP), and a new superheavy element took its place in the seventh row of the periodic table.
The reaction was a fusion of element 20 with element 95: calcium-48 with americium-243.
The experiment began on July 14, 2003 and ended on August 10, 2003.
Calcium ions were formed into a beam in a cyclotron (a particle accelerator) and fired at a target layer of americium deposited on titanium foil.
Four atoms of element 115 (moscovium) were produced, which alpha decayed producing element 113, (nihonium). (1)
The researchers stated that one atom of moscovium-287 was made, and three atoms of moscovium-288 were made. Further experiments and analysis later confirmed this result.
The element is named after Moscow in recognition of the contribution The JLNR played in the discovery of the element. Moscovium is expected to officially replace its temporary name, ununpentuim, later this year.
As a result of its position in the periodic table moscovium is expected to be classed as one of the “other metals” and to have similar properties to the metal bismuth.
IUPAC reviewed the evidence for the discovery of moscovium and in 2016 they said, ‘The 2010 jointly with the 2013 collaborations of Oganessian et al. have met the Criteria for discovery of the element with atomic number Z=115 in as much as the reproducibility of alpha chain energies and lifetimes of 289115 in a cross reaction comparison is very convincing.’
IUPAC has accepted the discoveries of:
- element 113 (nihonium)
- element 114 (flerovium)
- element 115 (moscovium)
- element 116 (livermorium)
- element 117 (tennessine)
- element 118 (oganesson)
thus completing the seventh row of the periodic table.
Appearance and Characteristics
Harmful effects:
Moscovium is harmful due to its radioactivity.
Characteristics:
Moscovium is a synthetic radioactive metal and has only been produced in minute amounts.
Uses of Actinium
Moscovium is of research interest only.
Abundance and Isotopes
Abundance earth’s crust: nil
Abundance solar system: parts per trillion by weight, parts per trillion by moles
Cost, pure: $ per 100g
Cost, bulk: $ per 100g
Source: Moscovium can be produced by bombarding 243Am with 48Ca ions in a heavy ion accelerator.
Isotopes: Moscovium has 4 isotopes, with mass numbers from 287 to 290. None are stable.
References
- Lawrence Livermore National Laboratory , Livermore Scientists Team With Russia To Discover Elements 113 and 115.
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Spectral characteristics of element 115 ?