JEE MAIN - Chemistry (2021 - 25th February Evening Shift - No. 23)
Among the following, number of metal/s which can be used as electrodes in the photoelectric cell is _________. (Integer answer)
(A) Li
(B) Na
(C) Rb
(D) Cs
(A) Li
(B) Na
(C) Rb
(D) Cs
Answer
1
Explanation
Among the given alkali metals, only cesium (Cs)
is used as electrode in the photoelectric cell
due to its lowest ionisation energy.
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