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The atomic number of iron is 56. The number of unpaired electrons in the Fe3+ ion is ...

The atomic number of iron is 56. The number of unpaired electrons in the Fe3+ ion is ____________
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  • A 1
  • B 2
  • C 3
  • D 4
  • E 5
Correct Answer: Option E
Explanation:
-There are 4 unpaired electrons in Fe
-However; 5 unpaired electrons are present in Fe3+

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