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Which of the following are coloured due...

Which of the following are coloured due to the charge transfer ?

A

`KMnO_(4)`

B

`K_(2)Cr_(2)O_(7)`

C

`[Fe(H_(2)O)_(5)NO]SO_(4)`

D

`Fe[Fe(CN)_(6)]_(3)`

Text Solution

Verified by Experts

The correct Answer is:
A, B, C, D
(d) is coloured due to MLCT spectra.
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MnO_(2) is the most important oxide of manganese , MnO_(2) occurs natually as the black coloured mineral pyrolusite. It is an oxidising agent, and decomposes to Mn_(3)O_(4) on heating to 530^(@) C. It is used in the preparation of potassium permanaganate and in the productioon of Cl_(2) gas. Over half million tonnes per year of MnO_(2) is used in dry batteries. Q. In which of the following species, the colour is due to charge transfer? (I) [Mn(OH)_(4)]^(2-) (II) MnO_(4)^(2-) (III) MnO_(4) (IV) KMnO_(4)

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