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Why is Mn in MnO4- coloured?

Updated: 5/29/2024
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11y ago

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Complex ions are not the only ions that have color in solution. For example, Cu2+ is blue in aqueous solutions but is not a complex ion.

That's correct, but you haven't answer the question. Mn and Cu are transition metals that have d-orbitals available. One of the properties of the d-orbitals is that they can unfold and allow electrons to move freely in those unfolded orbitals. The energy the electrons lose is in the visible range of the spectrum, so we see it as colour.

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14y ago
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4h ago

Manganese in MnO4- is colored because it has unpaired d electrons in its d orbitals, leading to d-d transitions that absorb visible light. This absorption of light contributes to its purple color.

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11y ago

Due to charge transfer transition from oxygen to manganese.

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Q: Why is Mn in MnO4- coloured?
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Related questions

What is the Oxidation number for MnO4?

The oxidation number for Mn in MnO4^- is +7. This is found by balancing the charges on the formula MnO4^- where O has an oxidation number of -2.


What is the oxidation number of O in MnO4?

The oxidation number of oxygen (O) in MnO4 is -2. To find the oxidation number of manganese (Mn) in MnO4, we use the fact that the sum of the oxidation numbers in a compound is zero (since MnO4 is a polyatomic ion). Therefore, Mn must have an oxidation number of +7 in this compound.


What is the oxidation number for MnO4-2?

manganese is a metal element. It shows +4 in Mno4 ompouund.


What is the symbol for cupric sulfate?

Permanganate is a poly atomic ion, not an element. It contains two elements: manganese (Mn) and oxygen (O). The formula of the permanganate ion is MnO4-


What are the oxidation numbers of the atoms in the MnO4- ion?

For the MnO4- ion, the oxidation number of oxygen is typically -2. Since the overall charge of the ion is -1, the oxidation number of manganese (Mn) must be +7 to balance out the charges.


What is the oxidation number of MnO4?

O.S. of Mn = +7 O.S. of O = -2 O.N. of cpd = -1


How are the oxygen atoms balanced for the red-ox equations in acidic solutions?

To balance the oxygens, you add H2O to one side, and the H^+ to the other (acid). Example:MnO4^- ===> Mn^2+ add 4 H2O to the right side MnO4^- ===> Mn^2+ + 4H2O this balances the oxygens. Now add 8H^+ to the left side MnO4^- + 8H^+ ===> Mn^2+ + 4H2O Now this is balanced for Mn, H and O. You now only have to balance the electrons (charge).


What is the oxidation number in MnO4?

K has an oxidation number of +1 O has an oxidation number of (-2) x 4 So... the oxidation number for Mn is whatever is needed to make 1-8 equal to zero. Therefore, the oxidation number for Mn is +7


How can write formula of manganese II superoxide?

The chemical formula for manganese(II) superoxide is MnO2.


What is the permanganate ion composed of?

The permanganate ion is composed of one manganese atom (Mn) surrounded by four oxygen atoms (O) bonded together. The chemical formula of the permanganate ion is MnO4-.


What is the oxidation number of Mn in Mn04?

In the anions of oxyacids, oxygen is always assigned an oxidation number of -2. Therefore, in an MnO4-1 anion, manganese must have an oxidation number of +7 to achieve electrical balance for the anion. (There is no neutral compound with the formula MnO4.)


What is the formula for Hydronium permanganate?

The formula for hydronium permanganate is H3O+MnO4-.