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MnO(4)^(-) is of intense pink colour, th...

`MnO_(4)^(-)` is of intense pink colour, though `Mn` is in`(+7)` oxidation state.It is due to:

A

Oxygen gives colour to it

B

Charge transfer when Mn gives its electron to oxygen

C

Charge transfer when oxygen gives its electrons to Mn making in Mn(+VI) hence coloured

D

None is correct

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The correct Answer is:
C
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MnO_(4)^(-) is intense pind colour, though Mn is in (+7) oxidation state. It is due to

MnO_(4)^(-) is intense pint colour, though Mn is (+7) oxidation state, It is due to

Transition metals usually from coloured complexes and d-d transitions (t_(2g)hArre_(g)) are responsible for colour as the energy difference between t_(2g) and e_(g) lies in visible region. But all the coloured ions are not dut to d-d transition but charge transfer bands also play important roles. Charge transfer bands may be of two types. (i) ligand to metal (CTLM) " "(ii) metal to ligand (CTML). Charge transfer transition always produces intense colour as compared to d-d transition. MnO_(4)^(-) is dark purple coloured though Mn is in (+VII) oxidation state with 3d^(@) configuration

Why KMnO_(4) or MnO_(4)^(-) ion is coloured ?

Pink colour of LiCl crystals is due to:

The stable oxidation states of Mn are

Solution of MnO_(4)^(-) is purple - coloured due to

NARAYNA-D - BLOCK ELEMENTS-EXERCISE-2
  1. [Ti(H(2)O)(6)]^(3+) is purple in colour because it is complimentary co...

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  2. Number of electrons transferred in each case when KMnO(4) acts as an o...

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  3. MnO(4)^(-) is of intense pink colour, though Mn is in(+7) oxidation st...

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  4. KMnO(4) dissollution in concentration H(2)SO(4) results in explosion d...

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  5. When K(2)MnO(4) is added in solution of NH(4)Cl then

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  6. K(2)Cr(2)O(7) is preferred to Na(2)Cr(2)O(7) for use in volumetric ana...

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  7. The blue colour produced on adding H2O2 to acidified K2Cr2O7 is due to...

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  8. CrO(3) dissolves in aqueous NaOH to give:

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  9. The n-factor for K(2)Cr(2)O(7) in acidic medium is

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  10. In electrorefining of copper,some gold is deposited as

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  11. Arrange Ce^(3+),La^(3+), Pm^(3) and Yb^(3+) in increasing order of the...

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  12. Horn silver ore dissolves in excess of sodium cyanide solution forming

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  13. Using a Ziegler Natta catalyst the polythene formed is

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  14. An excellent lubricant amongst these is

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  16. A white solid Y, on heating gives off a gas which turns lime water mil...

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  17. If H(2)S gas is passed into a solution of Cu^(2+), Cd^(2+) having exce...

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  18. It is non experimental fact that Cs(2)[CuCl(4)] is orange coloured but...

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  19. The correct regarding CuCl(5)^(-3) compound is

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  20. What will be the hybridisation of Ni(CN)(5)^(-3) ?

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