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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 electrons to oxygen

C

charge transfer when oxygen its electron to `Mn` making it `Mn(+VI)` hence coloured

D

None is correct

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The correct Answer is:
C
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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

The compound in which Mn has oxidation state of +3 is

With F highest stable oxidation state of Mn is

With F highest stable oxidation state of Mn is

With O highest possible oxidation state of Mn is

With O highest possible oxidation state of Mn is

The pink colour of phenolphthalein in alkaline medium is due to

The stable oxidation states of Mn are

Assertion : Solution of Na_(2) CrO_(4) in water is intensely coloured Reason : Oxidation state of Cr in Na_(2) CrO_(4) is + VI .

On oxidation of S_(2)O_(3)^(2-) by MnO_(4)^(-) in neutral aqueous medium, the oxidation state of S would change from :

RESONANCE ENGLISH-D BLOCK ELEMENTS-EXERCISE-I PART-II
  1. The colour of transition metal ion is attributed to:

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  2. Which one of the following ionic species will impact colour to an aque...

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

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  4. Yellow colour of chromates changes to orange on acidification due to f...

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  5. CuSO(4).5H(2)O is blue in colour because

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  6. Which of the following ions give coloured aqueous solution?

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  7. The catalytic activity of transition metals and their compounds is asc...

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  8. Cementite is:

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  9. which forms interstitial compounds?

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  10. Which of the following statement is/are correct?

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  11. KMnO(4) is the oxo salt of :

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  12. When K(4)[Fe(CN)(6)] is added to FeCl(3),the complex compound formed i...

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  13. FeCl(3).6H(2)O is actually:

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  14. A compound is yellow when hot and white when cold. The compound is:

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  15. On heating ZnCl(2).2H(2)O, the compounds obtained is:

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  16. When copper is placed in the atmosphere for sufficient time, a green c...

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  17. The solubility of silver bromide in hypo solution (excess) is due to ...

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  18. In dilute alkaline solution,MnO(4)^(-) changes to:

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  19. Cl2 gas is obtained by various reactions select the reactions from the...

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  20. CuSO(4) solution + lime is called:

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