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Moscovium (Mc)

Moscovium is a chemical element of the periodic table with chemical symbol Mc and atomic number 115 with an atomic weight of 288 u and is classed as unknown and is part of group 15 (nitrogen group). Moscovium is solid at room temperature.

Moscovium in the periodic table

Atomic number115
Group15 (Nitrogen group)
Number of protons115 p+
Number of neutrons173 n0
Number of electrons115 e-
From Wikipedia, the free encyclopediaMoscovium is the name of a synthetic superheavy element in the periodic table that has the symbol Mc and has the atomic number 115. It is an extremely radioactive element; its most stable known isotope, moscovium-289, has a half-life of only 220 milliseconds. It is also known as eka-bismuth or simply element 115.

Physical properties

Phase at STPSolid
Density13.5 g/cm3
Atomic weight288 u

Thermal properties

Melting point670 K
396.85 °C
746.33 °F
Boiling point1400 K
1126.85 °C
2060.33 °F
Heat of vaporization-

Atomic properties

Electronegativity (Pauling Scale)-
Electron affinity35.3 kJ/mol
Oxidation states(+1), (+3)
Ionization energies
  1. 538.4 kJ/mol
  2. 1756.0 kJ/mol
  3. 2653.3 kJ/mol
  4. 4679.5 kJ/mol
  5. 5721.6 kJ/mol

Electron configuration for moscovium

Electron configuration
Shorthand configuration
[Rn] 5f14 6d10 7s2 7p3
Electron configuration
Full configuration
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 5f14 6s2 6p6 6d10 7s2 7p3
Electron configuration chart
Electrons per shell2, 8, 18, 32, 32, 18, 5
Valence electrons
Valency electrons
Bohr model
MoscoviumElectron shell for Moscovium, created by Injosoft ABMc
Figure: Shell diagram of Moscovium (Mc) atom.
Orbital Diagram

The history of Moscovium

DiscoveryJoint Institute for Nuclear Research, Lawrence Livermore National Laboratory (2003)
Discovery of moscovium
Moscovium was first synthesized in 2003 by a joint team of Russian and American scientists at the Joint Institute for Nuclear Research (JINR) in Dubna, Russia. In December 2015, it was recognized as one of four new elements by the Joint Working Party of international scientific bodies IUPAC and IUPAP. On 28 November 2016, it was officially named after the Moscow Oblast, in which the JINR is situated.


List of unique identifiers for Moscovium in various chemical registry databases
CAS Number54085-64-2
ChemSpider ID-
EC number-
PubChem CID Number-