Identify the reaction from following having top position in EMF series (Std. red. potential) according to their electrode potential at 298 K.

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🧠 Ranking Reactivity
The EMF series (Electrochemical Series) lists electrodes in order of their Standard Reduction Potentials (). In the standard convention used by NCERT, the most positive potentials (least reactive metals) are at the "top" of the table.

🗺️ Comparing Reduction Potentials
- :  (Very active metal)
- : 
- : 
- :  (Noble metal)

In most modern tables, values are listed from highest (most positive) to lowest (most negative). Since Gold has the highest positive reduction potential

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