Why are potassium and caesium, rather than lithium used in photoelectric cells ?
Why are potassium and caesium, rather than lithium used in photoelectric cells ?
4 views
1 Answers
Potassium and caesium have much lower ionization enthalpy than that of lithium. As a result, these metals on exposure to light, easily emit electrons but lithium does not. Therefore, K and Cs rather than Li are used in photoelectric cells.
4 views
Answered