115
Mc
Moscovium
290
Moscovium (Mc)
Post-Transition MetalGroup 15Period 7p-block-blockRadioactive
Moscovium 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.
Latin name: Moscovium
Atomic Number
115
Atomic Mass
290 g/mol
Phase (STP)
Solid (predicted)
Electron Config.
[Rn] 5f¹⁴ 6d¹⁰ 7s² 7p³ (predicted)
General
SymbolMc
Atomic Number115
Atomic Mass290 g/mol
CategoryPost-Transition Metal
Group15
Period7
Blockp-block
Electron Configuration[Rn] 5f¹⁴ 6d¹⁰ 7s² 7p³ (predicted)
Valence Electrons15
Colourunknown (predicted metallic)
Physical Properties
Phase (STP)Solid (predicted)
Densitypredicted ~13 g/cm3
Melting Pointpredicted ~600 K
Boiling Pointpredicted ~1200 K
Atomic Properties
Oxidation States+1, +3, +5
Ion ChargeMc+/Mc3+/Mc5+
Nuclear & Hazards
RadioactiveYes
Half-life0.65 seconds (Mc-290)
Abundance
In Earth's Crust0%
Discovery & History
Discovery Year2003
Discovered ByJoint Institute for Nuclear Research (Dubna) with collaborators
Country of DiscoveryRussia
Isotopes of Moscovium
| Isotope | Abundance | Half-life | Decay |
|---|---|---|---|
| Mc-288 | — | ~87 milliseconds | α |
| Mc-290 | — | ~0.65 seconds | α |