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JEE PYQ: S Block Elements Question 14

Question 14 - 2020 (02 Sep Shift 1)

The metal mainly used in devising photoelectric cells is:

(a) Na (b) Li (c) Rb (d) Cs

Show Answer

Answer: (d)

Solution

Cesium has the lowest ionisation enthalpy and hence it shows the photoelectric effect to the maximum extent. So it is used in photoelectric cells.


Learning Progress: Step 14 of 37 in this series