The electron configuration of a manganese ion (Z = 25) is [Ar]3d 3. What is the charge on this ion?
The electron configuration of a manganese ion is [Ar]3d3
so the total number of electrons in manganese ion are 21
The number of electrons in manganese are 25 so the charge = 25 - 21 = 4
Therefore, the charge on manganese ion would be +4
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