Is moscovium a metal?

Moscovium's chemical category has not been confirmed by experiment, so it is listed with unclassified properties.

How many protons does moscovium have?

Moscovium has 115 protons. Its atomic number is 115, which is also the number of electrons in a neutral atom of moscovium.

What group and period is moscovium in?

Moscovium is in group 15 and period 7 of the periodic table, in the p-block.

What is the atomic mass of moscovium?

The atomic mass of moscovium is 290 u (unified atomic mass units).

Element 115

Moscovium (Mc)

Element with unclassified properties · Period 7 · Group 15 · p-block

Moscovium (Mc) is element 115 of the periodic table, an element with unclassified properties in period 7, group 15 (p-block) with an atomic mass of 290 and is a solid at standard conditions.

At a glance

Atomic number: 115
Symbol: Mc
Atomic mass: 290 u
Category: Unclassified properties
Period: 7
Group: 15
Block: p-block
Phase at STP: solid

Electron structure

Electron configuration: 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 6s2 6p6 5f14 6d10 7s2 7p3
Shorthand configuration: [Rn] 5f14 6d10 7s2 7p3
Electrons per shell: 2, 8, 18, 32, 32, 18, 5
Oxidation states: +1, +3

Physical properties

Moscovium has only ever been produced in quantities too small to weigh or observe in bulk. The physical and atomic values below are theoretical predictions from periodic trends and relativistic calculations, not measurements.

Melting point: 670 K (396.85 °C) (predicted)
Boiling point: 1,400 K (1,126.85 °C) (predicted)
Density: 13.5 g/cm³ (predicted)
Phase: solid

Atomic properties

Covalent radius: 162 pm (predicted)
First ionization energy: 538 kJ/mol (predicted)
Electron affinity: 35 kJ/mol (predicted)

Notable isotopes

Notable isotopes of Moscovium: mass number, atomic mass, natural abundance, and stability.
Isotope	Mass	Abundance	Stability
Mc-290	290.19598	-	Half-life 0.65 seconds

Common uses

Scientific research only

Discovery

Year: 2003
Discovered by: Joint Institute for Nuclear Research, Lawrence Livermore National Laboratory
Country: Russia/USA

Frequently asked questions

Is moscovium a metal?: Moscovium's chemical category has not been confirmed by experiment, so it is listed with unclassified properties.
How many protons does moscovium have?: Moscovium has 115 protons. Its atomic number is 115, which is also the number of electrons in a neutral atom of moscovium.
What group and period is moscovium in?: Moscovium is in group 15 and period 7 of the periodic table, in the p-block.
What is the atomic mass of moscovium?: The atomic mass of moscovium is 290 u (unified atomic mass units).

Keep exploring

Moscovium's row is on the printable element property sheet, and its tile is on the periodic table wall chart - the same numbers as above, laid out for A4 or A3 paper.