The Mn2+ ion is a manganese ion that has lost two electrons, resulting in a positive charge.
Transition Metals: A group of metals in the middle of the periodic table; manganese is one of these and often forms ions with various charges.
Oxidation State: The condition of an atom expressed by the number of electrons that an atom will gain, lose, or share when it forms a compound.
Electron Configuration: The distribution arrangement of electrons in an atom or molecule's electron shells.
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