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Chromium (Cr) has the hardest oxidation state among the listed metals. It commonly exhibits an oxidation state of +6 in compounds due to its high electronegativity and tendency to lose electrons.

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Q: Which of these metals has the hardest oxidation Cu Al Fe or Cr?
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What is the oxidation number of Al2Cr6O21?

The oxidation number of aluminum (Al) is +3, the oxidation number of chromium (Cr) is +3, and the oxidation number of oxygen (O) is -2. Therefore, in Al2Cr6O21, the total oxidation number would be +6 from aluminum, +18 from chromium, and -42 from oxygen, resulting in a net oxidation number of -18 for the compound.


Is the normal oxidation state of chromium cr ii?

No, the normal oxidation state of chromium is Cr(III). However, it can also exist in other oxidation states such as Cr(0), Cr(II), Cr(IV), and Cr(VI) depending on the compound it is part of and the reaction conditions.


What is the change in the oxidation number of Cr?

The change in oxidation number of Cr depends on the specific reaction or compound involved. For example, in the reaction from Cr(III) to Cr(VI), the oxidation number of Cr changes from +3 to +6, indicating an increase in oxidation state.


Which answer is the oxidation number for Cr in Cr2Omc019-1jpg?

The oxidation number for Cr in Cr2O7^2- is +6.


What is the oxidation number of Cr in CaCrO4?

+2 for Ca, +6 for Cr, -2 for each O


What is the oxidation number of Cr2O3?

+3 for Cr and -2 for O


Oxidation number of Cr in K2Cr2O7?

The oxidation number of chromium (Cr) in K2Cr2O7 is +6. This is because the total charge of the compound is 0, and each potassium (K) atom has an oxidation number of +1, and each oxygen (O) atom has an oxidation number of -2. Using these values, you can calculate the oxidation number of chromium to be +6.


What is the oxidation number of Cr in CrBr?

The oxidation number of Cr in CrBr is +3. Since Br has an oxidation number of -1 and there is only one Br atom in the compound, the oxidation number of Cr must be +3 to balance the charges to zero.


What is the oxidation number for Cr in MgCrO4?

The oxidation number of Cr in MgCrO4 is +6. This is because oxygen is typically assigned an oxidation number of -2, and the overall charge of the compound is 0, so the oxidation number of magnesium (+2) and oxygen (-2) must be balanced by the oxidation number of Cr (+6).


What is the oxidation number of element Cr?

As with any other element, the oxidation number of Cr depends on whether and how it is chemically bonded. The oxidation number of pure elements is arbitrarily defined to be 0. In compounds, Cr has oxidation numbers of +2, +3, and +6, depending on the compound.


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 Cr in Cr2O72 is?

The oxidation number of Cr in Cr2O7^2- is +6. This is because the overall charge of the dichromate ion is 2-, and each oxygen atom has an oxidation number of -2. By setting up and solving an equation representing the total charge of the ion, we can determine the oxidation number of Cr.