What’s the oxidation state of the transition metal in the following compounds? (i) Na3[FeCl6] (ii) Cr(OH2)6. The Oxidation State of Transition Metals in Compounds

The Oxidation Status of Transition Metals in Compounds
The oxidation status of the transition metals within compounds can differ depending on which elements are present (FuseSchool 2020). The oxidation status of iron in Na3 is an example.[FeCl6] It is +3, as the net charge is zero, and both the sodium and chlorine ions have an oxidation status of +1. Iron, the transition metal only in the compound, must compensate for the negative charge by having a +3-oxidation state. Similar to the above, Cr(OH2)6’s oxidation status for chromium is +3. Because the compound has an electron charge of zero while the oxygens have an electron state of 2 (Chemistry LibreTexts 2019). The only transition metal is chromium, so it has to balance the charges of other elements by having a +3 state. The oxidation status of a metal within a compound can generally be found by looking at the oxidation conditions of other elements and making sure that there is no net charge. Example: Iron in Na3 has its oxidation state.[FeCl6] It is +3. The oxidation status of chromium Cr(OH2)6 is also +3. These are just a few examples of how it is possible to determine the oxidation status of transition metals within compounds. Cont…

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