An ionic salt exhibits colour only when _______.

its anions are coloured.

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its cations are coloured.

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either cation or anion is coloured.

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both cation and anion are colourless.

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Solution

The correct option is C
either cation or anion is coloured.

The colour of an ionic salt depends on the colour of both anion and cation. So, an ionic salt exhibits colour when either the cation or the anion is coloured or both cation and anion are coloured.

Coloured Ionic Salts

Coloured Cation + Uncoloured Anion

Uncoloured Cation + Coloured Anion

Coloured Cation + Coloured Anion

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