Which of the following colours is developed when alkali metal is dissolved in liquid ammonia?

Which of the following colours is developed when alkali metal is dissolved in liquid ammonia?
  1. dark red
  2. violet
  3. deep blue
  4. green

Solution

Alkali metals in liquid ammonia give deep blue colour solution due to the formation of ammoniated electron which absorbs energy in the visible region.

Asked in: MHT CET 2024 (04 May Shift 1)

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