115 Mc (Moscovium)
Mass number – 290
Atomic number – 115
Atomic weight – 288.1943 (g/mol)
Group – 15
Period – 7
Block – P
Electrons – 115
Protons – 115
Neutrons – 174
Element category – Post-transition metal (Base Metal)
Electron Configuration – 1s22s22p63s23p63d104s24p64d105s25p64f145d106s26p65f146d107s27p3
Electrons per shell – K2, L8, M18, N32, O32, P18, Q5
Phase – Solid
Melting point – 670 K (400 oC)
Boiling Point – ~1400 K (~1100 oC)
Density – 13.5 g/cm3
Heat of Fusion – 5.90 – 5.98 kJ/mol
Heat of vaporization – 138 kJ/mol
Oxidation states – 1, 3
Ionization energies – 1st: 538.4 kJ/mol, 2nd: 1756 kJ/mol, 3rd: 2653.3 kJ/mol
Atomic radius – empirical: 187 pm
Covalent radius – 156 – 158 pm
CAS Number – 54085–64–2
Naming – After Moscow region
Discovery – Joint Institute for Nuclear Research, Lawrence Livermore National Laboratory, Vanderbilt University and Oak Ridge National Laboratory (2003)
Isotopes – 290Mc 289Mc 288Mc 287Mc
Uses – At present, it is only used in research.
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