Among the following number of metals which can be used as el

Question

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

DivineJEE · Accepted Answer

Among the given alkali metals, only cesium (Cs) is used as electrode in the photoelectric cell due to its lowest ionisation energy.

Explanation

The electronic configuration of Pt atomic number 78 is

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Consider the cell at 25 CZn Zn2 aq 1M Fe3 aq Fe2 aq PtsThe f

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