Element 115 · Unknown properties
Moscovium (Mc) — Element 115
Moscow oblast
Moscovium (Mc) is a chemical element with unknown bulk chemical properties in Period 7, Group 15 of the periodic table with atomic number 115, standard atomic weight [290] u, and ground-state electron configuration [Rn] 5f¹⁴ 6d¹⁰ 7s² 7p³. At standard temperature and pressure it is classified as a short-lived synthetic nuclide with 5 valence electrons.
Research only
What are the atomic properties and physical constants of Moscovium?
Reference constants compiled from IUPAC standard atomic weights, the NIST Atomic Spectra Database, and the CRC Handbook.
- Atomic number (Z)
- 115
- Standard atomic mass
- [290] u
- Chemical family
- Unknown properties
- Ground-state configuration
- [Rn] 5f¹⁴ 6d¹⁰ 7s² 7p³
- Electrons per shell
- 2, 8, 18, 32, 32, 18, 5
- Valence electrons
- 5
- Common ion charges / oxidation states
- —
- Phase at STP
- Synthetic
- Pauling electronegativity
- —
- First ionization energy
- —
- Atomic radius
- —
- Melting point
- —
- Boiling point
- —
- Discovery year
- 2003
- Table coordinate
- Period 7, Group 15
- Radioactivity
- Radioactive (no stable isotopes)
How are electrons arranged across Moscovium’s shells?
A neutral Moscovium atom contains 115 electrons distributed across 7 occupied principal energy shells ([Rn] 5f¹⁴ 6d¹⁰ 7s² 7p³). The table below compares Moscovium’s shell occupancy against each shell’s theoretical 2n² capacity.
| Principal Shell (n) | Spectroscopic Letter | Electrons in Mc | Max Shell Capacity (2n²) |
|---|---|---|---|
| n = 1 | K | 2 e⁻ | 2 e⁻ |
| n = 2 | L | 8 e⁻ | 8 e⁻ |
| n = 3 | M | 18 e⁻ | 18 e⁻ |
| n = 4 | N | 32 e⁻ | 32 e⁻ |
| n = 5 | O | 32 e⁻ | 50 e⁻ |
| n = 6 | P | 18 e⁻ | 72 e⁻ |
| n = 7 | Q | 5 e⁻ | 98 e⁻ |
Frequently Asked Questions about Moscovium (Mc)
What is the atomic mass and atomic number of Moscovium (Mc)?
Moscovium (Mc) has atomic number Z = 115 (115 protons in its nucleus) and an IUPAC standard atomic weight of [290] u. It sits in Period 7, Group 15 and is classified as an unknown properties.
What is the ground-state electron configuration of Moscovium?
The neutral ground-state electron configuration of Moscovium (Z = 115) is [Rn] 5f¹⁴ 6d¹⁰ 7s² 7p³. Across its 7 occupied principal shells (n = 1 to n = 7), the electrons per shell are 2, 8, 18, 32, 32, 18, 5, with 5 valence electrons participating in bonding.
What are the common ion charges and electronegativity of Moscovium?
Moscovium has no common simple monatomic ion charges under standard classroom conditions. Its Pauling electronegativity is — and its first ionization energy is —.
When was Moscovium discovered and what is it used for?
Moscovium was discovered in 2003 (Moscow oblast). Research only
How does Moscovium compare to neighboring elements?
Other unknown properties elements: