NEET Chemistry (general) MCQ Question
Which of the following statements about the standard electrode potentials of d-block elements is correct?
Copper has a positive standard electrode potential, preventing it from liberating hydrogen from acids.
All d-block metals easily liberate hydrogen from acids due to their negative standard electrode potentials.
Higher oxidation states of d-block elements are more stable than lower oxidation states due to favorable hydration enthalpy.
The standard electrode potential values for all d-block elements increase consistently across the series.
Correct Answer
Detailed Explanation
Copper's unique positive standard electrode potential indeed prevents it from liberating hydrogen from acids, as indicated in the NCERT context. The other options misinterpret the stability and behavior of d-block elements.
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