Assertion (A): `F_(2)` does not show disportion reactions.
Reason (R ): `F_(2)` is the stronger oxidising agent and is always reduced.

Answer

To analyze the assertion and reason provided in the question, we can break it down step by step:

### Step 1: Understanding Disproportionation Reactions
Disproportionation reactions are a type of redox reaction where the same element is simultaneously oxidized and reduced. This means that the element must have at least two different oxidation states in the reaction.

**Hint:** Recall the definition of disproportionation reactions and identify the key characteristic that distinguishes them from other types of reactions.

### Step 2: Analyzing Fluorine's Oxidation States
Fluorine (F) can exhibit only two oxidation states: 0 (in elemental form) and -1 (in compounds like HF). It does not show any positive oxidation states (like +1, +2, +3, etc.) due to its high electronegativity.

**Hint:** Consider the common oxidation states of fluorine and how they relate to its ability to undergo redox reactions.

### Step 3: Assessing Fluorine as an Oxidizing Agent
Fluorine is known to be the strongest oxidizing agent due to its high electronegativity. This means that it readily gains electrons and is reduced, but it does not lose electrons (i.e., it does not get oxidized).

**Hint:** Think about what it means for a substance to be a strong oxidizing agent and how this affects its ability to participate in oxidation reactions.

### Step 4: Conclusion on Assertion and Reason
Since fluorine cannot undergo oxidation (it cannot have a positive oxidation state), it cannot participate in a disproportionation reaction. Therefore, the assertion that "F₂ does not show disproportionation reactions" is correct. The reason provided, "F₂ is the stronger oxidizing agent and is always reduced," correctly explains why the assertion is true.

**Hint:** Evaluate the relationship between the assertion and the reason to determine if the reason adequately supports the assertion.

### Final Answer
Both the assertion (A) and the reason (R) are correct, and the reason is a correct explanation of the assertion.