Which of the following metals are placed ced below below Hydrogen Hydrogen in in the the electrochemical electrochemical series?

Correct option is D

The correct answer is (d) Copper

In the electrochemical series, copper is placed below hydrogen, indicating that it is less reactive and cannot displace hydrogen from acids. It has a lower reduction potential compared to hydrogen, which is why it is placed below in the series.

1. Copper has a standard electrode potential of +0.34V.
2. Copper is used in electrical wiring due to its low reactivity.
3. It does not displace hydrogen from acids.
4. Copper is resistant to corrosion.
5. It is commonly used as a cathode material in electrochemical cells.

• Lead: Placed above hydrogen, more reactive than copper.
• Aluminium: More reactive than copper, displaces hydrogen from acids.
• Zinc: Also more reactive than copper and can replace hydrogen from acids.