What is the electronic configuration of Mn3+?

1 Answer
Meave60
Dec 16, 2015

The electron configuration for a #"Mn"^(3+)"# ion is #"[Ar]3d"^4"#.

Explanation:

Manganese has atomic number 25, meaning its atoms have 25 protons in their nuclei. A neutral manganese atom also has 25 electrons. However, the manganese 3+ ion, #"Mn"^(3+)"#, has 22 electrons. This gives it 3 more protons than electrons, which gives it the 3+ charge.

The electron configuration in noble gas shorthand for a neutral Mn atom is #"[Ar]3d"^5"4s"^2"#. The electron configuration for a #"Mn"^(3+)"# ion is #"[Ar]3d"^4"#. The two 4s valence electrons and one 3d electron is removed.

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