Assertion(A) - In case the central atom in a molecule is surrounded only by shared pairs of electrons, the molecule has a regular geometry.
Reason(R) -The shared pair of electrons repel each other with equal force so all bonds are equidistant from each other.

Options

A. Statemetn-1 is true, Statrment-2 is also true, Statement -2 is the correct explanation of statement-2
B. Statement -1 is true , Statement 2 is also true, Statement-2 is not the correct explanation of Statement-2
C. Statement-1 is true, Statement-2 is false.
D. Statement-1 is false, Statement-2 is true.

Explanation

To solve the question, we need to analyze both the Assertion (A) and the Reason (R) provided.

### Step 1: Understanding the Assertion (A)
The assertion states that "In case the central atom in a molecule is surrounded only by shared pairs of electrons, the molecule has a regular geometry."

- **Explanation**: A central atom surrounded by only shared pairs of electrons means that all the electron pairs are bonding pairs. In such cases, the molecular geometry tends to be regular or symmetrical. For example, in methane (CH₄), the central carbon atom is surrounded by four hydrogen atoms, and all bonds are formed by shared pairs of electrons. This results in a tetrahedral shape, which is a regular geometry.

### Step 2: Understanding the Reason (R)
The reason states that "The shared pair of electrons repel each other with equal force so all bonds are equidistant from each other."

- **Explanation**: In a molecule where the central atom is surrounded by shared pairs of electrons, these electron pairs repel each other due to their negative charge. According to VSEPR (Valence Shell Electron Pair Repulsion) theory, the electron pairs will arrange themselves as far apart as possible to minimize repulsion. This leads to a regular arrangement where all bond angles are equal, and all bonds are equidistant from each other, as seen in tetrahedral molecules like CH₄.

### Step 3: Conclusion
Both the assertion and the reason are true. The reason correctly explains why the assertion is true. Therefore, we can conclude that:

- **Assertion (A)** is true.
- **Reason (R)** is true and is the correct explanation for Assertion (A).

### Final Answer
Both the assertion and the reason are true, and the reason is the correct explanation for the assertion.

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