Caesium is used in

Caesium is used in
  1. devising photo electric cells
  2. air conditioning plants
  3. extraction of boron
  4. fast breeder nuclear reactors

Solution

Caesium is utilized in photoelectric cells because it has the lowest ionization energy of all the elements and is the most electropositive.

Asked in: MHT CET 2020 (14 Oct Shift 1)

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