* Ferrous Ion (Fe²⁺): This ion has a valency of +2. It's formed when iron loses two electrons.
* Ferric Ion (Fe³⁺): This ion has a valency of +3. It's formed when iron loses three electrons.
Key points:
* Valency refers to the combining power of an atom or ion. It indicates how many electrons an element can gain, lose, or share when forming chemical bonds.
* Iron (Fe) can have different oxidation states, leading to different ions with varying valencies.
* The Roman numeral in the name (II for ferrous, III for ferric) indicates the valency of the ion.
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