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Question

What is the oxidation number for iron?


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Solution

Oxidation number: Oxidation number denotes the oxidation state of an element in a compound ascertained according to a set of rules formulated on the basis that electron pair in a covalent bond belongs entirely to a more electronegative element.

The oxidation number for iron:

  • When an element is present in a free or uncombined state then the oxidation number of a particular atom is zero.
  • Here the iron is present in the free state.
  • So, the oxidation number for iron is zero.

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