Moscovium (Mc): Bohr Model, Protons, Neutrons & Electrons
Moscovium is element number 115, a superheavy in group 15, period 7. Its atom has 115 protons, 175 neutrons and 115 electrons arranged in 7 shells: 2, 8, 18, 32, 32, 18, 5.
Protons, neutrons and electrons in moscovium
The atomic number of moscovium is 115, so every moscovium atom has 115 protons. A neutral atom has the same number of electrons, 115. The number of neutrons depends on the isotope: neutrons = mass number − atomic number. For moscovium-290, that is 290 − 115 = 175 neutrons. Every isotope of moscovium is radioactive; 290 is the mass number of its most stable one.
How to draw the Bohr model of moscovium
- Draw the nucleus and write 115 p⁺ and 175 n⁰ inside it.
- Draw the first shell and put 2 electrons on it (the first shell holds at most 2).
- Draw the second shell and put 8 electrons on it.
- Draw the third shell and put 18 electrons on it.
- Draw the fourth shell and put 32 electrons on it.
- Draw the fifth shell and put 32 electrons on it.
- Draw the sixth shell and put 18 electrons on it.
- Draw the seventh shell and put 5 electrons on it.
- Check: 2 + 8 + 18 + 32 + 32 + 18 + 5 = 115 electrons, the same as the number of protons.
From potassium onwards the shells don’t simply fill as 2, 8, 8: the fourth shell starts before the third is full, so the real arrangement above (2, 8, 18, 32, 32, 18, 5) is the one to draw.
Electron configuration
The electron configuration of moscovium is [Rn] 7s² 5f¹⁴ 6d¹⁰ 7p³. Its 5 outer electrons decide how it reacts: it usually shares electrons in covalent bonds.
Key facts about moscovium
| Symbol | Mc |
|---|---|
| Atomic number | 115 |
| Relative atomic mass | [290] |
| Group · period · block | group 15 · period 7 · p-block |
| Type | Superheavy |
| State at 25 °C | unknown |
| Electron shells | 2, 8, 18, 32, 32, 18, 5 |
| Electron configuration | [Rn] 7s² 5f¹⁴ 6d¹⁰ 7p³ |
| Valence electrons | 5 |
| Common ion | — |
| Electronegativity (Pauling) | — |
| First ionisation energy | — |
| Atomic radius (empirical) | — |
Where moscovium sits on the periodic table
Frequently asked questions
How many protons, neutrons and electrons does moscovium have?
Moscovium has 115 protons and 115 electrons (atomic number 115). Its most common isotope, moscovium-290, has 290 − 115 = 175 neutrons.
What is the electron configuration of moscovium?
[Rn] 7s² 5f¹⁴ 6d¹⁰ 7p³. In shells that is 2, 8, 18, 32, 32, 18, 5.
How many valence electrons does moscovium have?
5. Moscovium is in group 15, and its outer shell holds 5 electrons.
Where is moscovium on the periodic table?
In group 15, period 7, in the p-block. It is a superheavy.
