Reason
In the representation $$ E_{F e^{3+} / F e^{2+}}^{\Theta}, E_{C u^{2+} / c u}^{\Theta} $$, $$F e^{3+} / F e^{2+}$$ and $$ \mathrm{Cu}^{2+} / \mathrm{Cu} $$ are redox couples.
Assertion
Redox couple is the combination of oxidised and reduced form of a substance involved in an oxidation or reduction half cell.
Redox couple is the combination of oxidised and reduced form of a substance involved in an oxidation or reduction half cell.
A
Assertion is correct but Reason is incorrect
B
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
C
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
D
Both Assertion and Reason are incorrect
Correct option is A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
A redox couple is defined as pair of compounds or elements having together the oxidised and reduced forms of it and taking part in an oxidation or reduction half-reaction. So, $$Fe^{3+}/Fe^{2+}$$ and $$Cu^{2+}/Cu$$ are redox couples.
Both assertion and reason are true reason is the correct explanation of assertion.
Hence, option $$A$$ is correct.