I belong to a family of techniques, named as if the colourless do not belong.

I and the rest of the family constitute a general method for separating mixtures.

When any of us is in operation, there is always one kind of competition or the other among the constituents of the mixture being separated.

I, just like the others, have a stationary phase and a moving phase.

The competition or the race involves electrostatic or physical adsorption or partition.

In my case different ions in the mixture compete for ionic sites on the stationary phase.
Who am I?

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I am an inorganic salt.

I am soluble in water, ethanol, methanol and propanone.

I possess a metal cation and a complex anion.

My anion is made up of another metal and oxygen.

1. I am an inorganic salt.
2. I am soluble in water, ethanol, methanol and propanone.
3. I possess a metal cation and a complex anion.
4. My anion is made up of another metal and oxygen.
5. Apart from being a powerful oxidizing agent, I can be used as a disinfectant at home.
6. My characteristic purple colour is due to this my complex anion.
Who am I?
ANSWER: KMnO4 or Potassium tetraoxopermanganate (VII).

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1.Sometimes I am visible, sometimes not so visible and you have to fish me out.

1. Sometimes I am visible, sometimes not so visible and you have to fish me out.
2. All substances in the elemental form do not want to have anything to do with me
3. I trace my ancestry to the oxygen atom.
4. At the end of the day I am only a number.
5. With regard to oxygen I am a negative integer, with hydrogen I am a positive integer.
6. Though Reduction and Oxidation constitute an inseparable pair I am stuck only to the latter
WHO AM I?
ANSWER: Oxidation number/state

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I do occur in the uncombined state but that is rare

Often, I am in a combined state