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What is the electronic configuration of the Iron 3+ ion?
Accepted Answer
The electronic configuration of the Iron (Fe) 3+ ion is [Ar] 3d⁵. Here's how we arrive at this:
1. Neutral Iron (Fe): The atomic number of Iron is 26, so it has 26 electrons. Its electronic configuration is [Ar] 3d⁶ 4s².
2. Iron (III) Ion (Fe³⁺): When iron loses three electrons to form the 3+ ion, it loses the two electrons from the 4s subshell and one from the 3d subshell, leaving it with 23 electrons. This gives us the configuration [Ar] 3d⁵.
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