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-2 for each O

+6 for Cr

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11y ago
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6mo ago

The oxidation number of Cr in CrO4^2- is +6. This can be calculated by considering the overall charge of the ion (-2) and the known charge of the oxygen ion (-2 each).

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Q: What is the oxidation number of CrO4-2?
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What is the oxidation number of CrO42?

The oxidation number of chromium (Cr) in CrO4^2- is +6. Since each oxygen atom has an oxidation number of -2, and the overall charge of the polyatomic ion is -2, the oxidation number of chromium can be determined by solving the equation: (oxidation number of Cr) + 4(-2) = -2.


What is the oxidation number of Mn in MnCrO42?

The oxidation number of Mn in MnCrO4^2- is +7. This is determined by accounting for the overall charge of the compound (-2), and the oxidation number of the other elements (Cr= +6, O= -2).


What is the name of the CrO4 ions?

If this compound existed it would be called chromium heptoxide. This would imply an impossibly high oxidation number for chromium. Chromium forms a number of oxides including Cr2O3 and a chromium(VI) oxide, chromium oxide peroxide.


The CrO42- ion was involved in a chemical reaction during which it was transformed into Cr3 plus ions. What is the change in oxidation number of the chromium atom?

2CrO2 -1 (aq) + 2H2O (l) + 6ClO -1 (aq) --------> 2CrO4 -2 (aq) + 3Cl2 (g) + 4OH -1 (aq)Cr increases from 3+ to 6+ in oxidation state.+3


What is the oxidation number of HClO?

Hydrogen's oxidation number is +1.Chlorin's oxidation number is +1.Oxygen's oxidation number is -2.


What is the oxidation number of acetate?

The oxidation number of acetate (CH3COO-) is -1. The carbon atom has an oxidation number of +3, each hydrogen atom has an oxidation number of +1, and the oxygen atoms have an oxidation number of -2.


What is the oxidation number of H2CO2?

The oxidation number of each hydrogen in H2CO2 is +1, while the oxidation number of each carbon in CO2 is +4. This is because hydrogen usually has an oxidation number of +1, and oxygen usually has an oxidation number of -2.


What is the Oxidation number of sand?

Silicon's oxidation number is +4.Oxygen's oxidation number is -2


What is the oxidation number of nitrosyl?

The oxidation number of nitrosyl (NO) is +1. Nitrogen typically has an oxidation number of -3, and oxygen typically has an oxidation number of -2. In NO, nitrogen has a -3 oxidation number and oxygen has a -2 oxidation number, leading to an overall oxidation number of +1 for the nitrosyl ion.


What is the oxidation number for Nb in NbO2?

The oxidation number for Nb in NbO2 is +4. Oxygen has an oxidation number of -2, so the overall charge of the compound must be balanced by the oxidation number of niobium.


Rank these items in order of increasing oxidation number for manganese MnCl2 Mn KMnO4 Mno2 lowest oxidation number?

MnCl2: oxidation number +2MnO2: oxidation number +4KMnO4: oxidation number +7


What is the oxidation number of H2O2?

The oxidation number for H is +1, and the oxidation number for O is -1.