Which element is placed at the top of the electrochemical series?
- Copper
- Hydrogen
-
Sodium
- Oxygen
The correct answer is: C
Explanation
In the electrochemical series, also known as the reactivity series, Sodium is placed at the top. The electrochemical series is a list of elements in the order of their standard electrode potentials (or redox potentials). Elements at the top of the series are more reactive and have a greater tendency to lose electrons and form positive ions.
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