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KCET2013ChemistrySolid State

Metallic lustre is due to

Options

  1. Ahigh density of metals
  2. Bhigh polish on the surface of metals
  3. Creflection of light by mobile electrons
  4. Dchemical inertness of metals

Correct answer

C. reflection of light by mobile electrons

Step-by-step solution

The lustre of metals is due to the free electrons (or to be precise very loosly bound electrons). When light strikes the surface of the metal, the energy is absorbed by the electrons which absorb and then emit the absorbed energy or reflect it, this cause metals to have lustre.

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