Assertion: Beryllium is most reducing s-block element
Reason: Hydration energy of Be is greater than its I.P.

Options

A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion
B. If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion
C. If Assertion is True but the Reason is False
D. If both Assertion & Reason are False

Explanation

To solve the question, we need to analyze both the assertion and the reason provided.

### Step 1: Analyze the Assertion
**Assertion:** Beryllium is the most reducing s-block element.

- Beryllium (Be) is a Group 2 element in the s-block of the periodic table.
- Reducing agents are substances that can donate electrons easily.
- In general, elements with lower ionization energies tend to be better reducing agents because they can lose electrons more readily.

### Step 2: Understand Ionization Energy
- Beryllium has the highest ionization energy among the Group 2 elements due to its small atomic size and effective nuclear charge.
- Higher ionization energy means it is less likely to lose electrons, which contradicts the assertion that it is the most reducing agent.

### Step 3: Analyze the Reason
**Reason:** The hydration energy of Be is greater than its ionization potential.

- Hydration energy refers to the energy released when ions are solvated by water molecules.
- For beryllium, the hydration energy is indeed significant due to its small size and high charge density.
- However, the statement that the hydration energy is greater than its ionization potential is incorrect. In fact, the ionization energy of beryllium is greater than its hydration energy.

### Step 4: Conclusion
- Since the assertion is incorrect (Beryllium is not the most reducing s-block element) and the reason is also incorrect (the hydration energy is not greater than the ionization potential), we conclude that both the assertion and reason are false.

### Final Answer
- Both the assertion and the reason are false. Therefore, the correct choice is option D.