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

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

[amp_mcq option1=”Zn > Cu > Ag” option2=”Ag > Cu > Zn” option3=”Cu > Zn > Ag” option4=”Cu > Ag > Zn” correct=”option1″]

This question was previously asked in

UPSC NDA-2 – 2019

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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