Assertion(A) Cu is less reactive than hydrogen.
Reason(R) `E_(Cu^(2+)//Cu)^(o+)` is negative.

Options

A. Both assertion and reason are true and the reason is the correct explanation of assertion.
B. Both assertion and reason are true and reason is not the correct explanation of assertion.
C. Assertion is true but the reason is false.
D. Both assertion and reason are false.

Explanation

To analyze the given assertion and reason, let's break it down step by step:

### Step 1: Understand the Assertion
The assertion states that "Cu is less reactive than hydrogen." In electrochemistry, the reactivity of a metal can be determined by its standard electrode potential. Metals with a higher (more positive) standard electrode potential are generally less reactive than those with a lower (more negative) standard electrode potential.

### Step 2: Understand the Reason
The reason provided is that "E_(Cu^(2+)//Cu)^(o+) is negative." This statement is about the standard electrode potential of the copper half-reaction.

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