D-And F-Block Elements Ques 437
Question: $ MnO_4^{-} $ is of intense pink colour, though Mn is in (+7) oxidation state. It is due to
Options:
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 mb making it Mn(+VI) hence coloured
D) none is correct
Show Answer
Answer:
Correct Answer: C
Solution:
The intense pink colour of $ MnO_4^{-} $ is not due to d-d transition but due to charge transfer (from O to Mn) reducing the oxidation state of Mn form +6 to +5 momentarily.
