Colloidal solution of gold is in different colours like red, purple, blue and golden because of

Colloidal solution of gold is in different colours like red, purple, blue and golden because of
  1. variable oxidation states of gold.
  2. size difference in the particles of gold.
  3. presence of impurities.
  4. difference in the concentration of gold particles.

Solution

Colloidal solution of gold show different colours (like red, purple, blue and golden) due to difference in size gold particles in colloidal solution.

Asked in: AP EAMCET 2017 (26 Apr Shift 1)

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