Manganese Electron Configuration
Orbital diagram
- Valence electrons
- 7
- Unpaired electrons
- 5
- Block
- d-block
- Magnetism (atom)
- paramagnetic
Electrons per shell
| K (n = 1) | 2 |
|---|---|
| L (n = 2) | 8 |
| M (n = 3) | 13 |
| N (n = 4) | 2 |
Manganese ion configurations
| Ion | Electrons | Configuration |
|---|---|---|
| Mn2+ | 23 | [Ar] 3d5 |
| Mn4+ | 21 | [Ar] 3d3 |
| Mn7+ | 18 | [Ne] 3s2 3p6 |
How to write it
Place 25 electrons into subshells in the Aufbau order (1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p, 7s, 5f, 6d, 7p), filling s with 2, p with 6, d with 10 and f with 14. Manganese sits in period 4, group 7, in the d-block, so its last electron enters a d subshell. Replacing the inner electrons with the previous noble gas gives the shorthand [Ar] 3d5 4s2.
Try manganese and its ions in the calculator, or see the full manganese data sheet.
Manganese electron configuration FAQ
What is the electron configuration of manganese?
1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁵ 4s². Shorthand (noble gas) notation: [Ar] 3d⁵ 4s².
What is the noble gas configuration of manganese?
[Ar] 3d⁵ 4s². The bracket stands for the Ar core electrons.
How many valence electrons does manganese have?
7 (2 outer s + 5 d electrons; 2 in the outermost shell).
How many unpaired electrons does manganese have?
5 in the ground state, following Hund’s rule. An atom with unpaired electrons is paramagnetic.
What is the electron configuration of Mn2+?
[Ar] 3d⁵ (23 electrons). Transition metal cations lose their outer s electrons before d electrons.
What is the electron configuration of Mn4+?
[Ar] 3d³ (21 electrons). Transition metal cations lose their outer s electrons before d electrons.
What is the electron configuration of Mn7+?
[Ne] 3s² 3p⁶ (18 electrons). Transition metal cations lose their outer s electrons before d electrons.