Home Chemistry D and F - Block Elements General MnO 4 – is of intense pink colour, though Mn…
Chemistry D and F - Block Elements General Single Correct MCQ
Published on: August 13, 2026

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 electron to Mn making it Mn(+VI) hence coloured
D
none is correct

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The correct answer is:
A

As there is no unpaired electron in Mn(VII) – [Ar] 18 3d 0 ; so d-d transition of electrons does not take place. The colour is due to charge transfer spectrum from O 2– to empty d-orbitals of Mn(VII).

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