Which one of the following represents the correct order of electron re

by

Which one of the following represents the correct order of electron releasing tendency of metals ?

”Zn
”Ag
”Cu
”Cu
This question was previously asked in
UPSC NDA-2 – 2019
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The correct option is A) Zn > Cu > Ag.
The electron releasing tendency of metals is determined by their position in the electrochemical series or reactivity series. Metals higher in the series have a greater tendency to lose electrons and act as reducing agents, thus having higher electron releasing tendency.
The reactivity series orders metals based on their decreasing reactivity: K > Na > Ca > Mg > Al > Zn > Fe > Pb > H > Cu > Hg > Ag > Au. Zinc is higher in the series than copper, and copper is higher than silver. Therefore, the order of electron releasing tendency is Zn > Cu > Ag. This also corresponds to their relative standard electrode potentials (standard reduction potentials, where less positive or more negative potential indicates higher electron releasing tendency).

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