Ion Mn²⁺

Symbol	Mn2+
Number	25
Atomic weight	54.9380440
Latin name	Manganum,Manganesium
English name	Manganese

How to build an electronic configuration by yourself? See link

Electronic configuration of of Manganese

Mn: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁵ → Mn²⁺:1s²2s²2p⁶3s²3p⁶4s²3d³

Same electronic configuration has an ion of Manganese +2 and Ti^-1, V, Fe⁺³, Co⁺⁴

The order of filling the shells with electrons of Manganese (Mn²⁺): 1s → 2s → 2p → 3s → 3p → 4s → 3d → 4p → 5s → 4d → 5p → 6s → 4f → 5d → 6p → 7s → 5f → 6d → 7p.

On the sub level ‘s’ there might be 2 electrons at most, on ‘p’ - up to 6, on ‘d’ - up to 10 and up to 14 on ‘f’

Manganese has 25 electrons, let's fill electronic layers in described order:

2 electrons on 1s-sub level

2 electrons on 2s-sub level

6 electrons on 2p-sub level

2 electrons on 3s-sub level

6 electrons on 3p-sub level

2 electrons on 4s-sub level

3 electrons on 3d-sub level

Oxidation state of Manganese

Atoms of Manganese in compounds have an oxidation state of 7, 6, 5, 4, 3, 2, 1, 0, -1, -2, -3.

The oxidation state is the conditional charge of an atom in a compound: the bond in a molecule between atoms is based on the sharing of electrons, thus, if the atom’s charge virtually increases, then the oxidation state is negative (electrons carry a negative charge), if the charge decreases, then the oxidation state is positive.

Oxidation state of an ion Mn²⁺ = 2

Ions of Manganese

Valence of Mn²⁺

Atoms of Manganese in compounds have valence VII, VI, V, IV, III, II, I.

Valence of Manganese is an ability of an atom Mn to build chemical bounds. The valence is based on electronic configuration of atom: electrons participated in chemical bounds are known as valence electrons. In general the valence is:

The number of possible chemical bounds with other atoms

The valence has no sign.

Quantum numbers Mn ²⁺

Quantum numbers are defined by the last electron in configuration, for an ion Mn these numbers are N = 3, L = 2, M_l = 0, M_s = +½

Filling an electronic configuration (gif):



Result: