Moscovium (Mc): Electron Configuration and Properties

115Mc[290]
Post-transition metal

Moscovium (Mc): Electron Configuration and Properties

Electron configuration [Rn] 7s2 5f14 6d10 7p3 · group 15 · period 7 · Ar [290]

Moscovium data

Atomic number
115
Relative atomic mass
[290]
Group
15
Period
7
Block
p
Category
Post-transition metal
Electron configuration
[Rn] 7s2 5f14 6d10 7p3
Full configuration
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d10 7p3
Electrons per shell
2, 8, 18, 32, 32, 18, 5 (K L M N O P Q)
Valence electrons
5
Electronegativity (Pauling)
no data
First ionisation energy
no data
Atomic radius (van der Waals)
no data
State at room temperature
Solid (predicted)
Melting point
no data
Boiling point
no data
Density
no data
Common oxidation states
+3, +1
Discovered
2003

Source: PubChem (NIH, accessed 13 Nov 2026); atomic mass: IUPAC standard atomic weight.

Electron shell diagram

Mc

K 2 · L 8 · M 18 · N 32 · O 32 · P 18 · Q 5

Orbital diagram (outer electrons)

[Rn]↑↓7s2↑↓↑↓↑↓↑↓↑↓↑↓↑↓5f14↑↓↑↓↑↓↑↓↑↓6d10↑↑↑7p3

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About moscovium

With atomic number 115, moscovium (Mc) has 115 protons in its nucleus and 115 electrons as a neutral atom. It is a post-transition metal in group 15, period 7, p-block. The element was discovered in 2003. It is named after the Moscow region. Its bulk properties have never been measured because only a few atoms have been made; it is expected to be a solid at room temperature.

Moscovium electron configuration

The electron configuration of moscovium is 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d10 7p3, or in short [Rn] 7s2 5f14 6d10 7p3. Its electrons occupy 7 shells: K = 2, L = 8, M = 18, N = 32, O = 32, P = 18, Q = 5. Moscovium has 5 valence electrons in the Q shell (7s2 7p3), which is why it sits in group 15. For this superheavy element the configuration is a theoretical prediction.

Filling order: 1s2(2) → 2s2(4) → 2p6(10) → 3s2(12) → 3p6(18) → 4s2(20) → 3d10(30) → 4p6(36) → 5s2(38) → 4d10(48) → 5p6(54) → 6s2(56) → 4f14(70) → 5d10(80) → 6p6(86) → 7s2(88) → 5f14(102) → 6d10(112) → 7p3(115)

Uses of moscovium

Moscovium has no practical use outside research, because it can only be made a few atoms at a time in particle accelerators.

Safety

Only a handful of moscovium atoms have ever been made and they decay very quickly, so it is never handled in an ordinary laboratory.

Other elements in group 15

Frequently asked questions

What is the electron configuration of moscovium?

The electron configuration of moscovium (Mc, atomic number 115) is 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d10 7p3, or [Rn] 7s2 5f14 6d10 7p3 in short. By shell: 2, 8, 18, 32, 32, 18, 5.

How many valence electrons does moscovium have?

Moscovium has 5 valence electrons.

Which group and period is moscovium in?

Moscovium is in group 15, period 7, p-block.

What is the atomic mass of moscovium?

Moscovium has no stable isotope, so the mass number of its longest-lived isotope, [290], is given.

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