VKC ScienceChemistry for written exams Telegram

UPSC Combined Geo-Scientist

Chemist

  • 3 descriptive papers
  • 200 marks each
  • 3 h per paper

Mains Paper I covers inorganic chemistry.

UPSC Combined Geo-Scientist, Mains · 2020 · Mains Paper I

Q3(c). Intense permanganate colour

Question

Explain the intense purple colour of KMnO₄.

Answer in brief

The intense colour arises mainly from allowed oxygen-to-manganese ligand-to-metal charge-transfer absorption.

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The full model answer

As written for the answer booklet: the diagram carries the working, the lines stay short. Read here only; it is not offered as a download.

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CoversIntense permanganate colourCharge-transfer absorption

All parts of Question 3