Statement-1:Manganese (atomic number 25) has a less favourable electron affinity than its neighbours on either side because
Statement-2:The magnanese has stable ,`[Ar]^(18) 3d^5 4s^2` electrons configuration.

Options

A. Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for Statement-1
B. Statement-1 is True, Statement-2 is True, Statement-2 is NOT a correct explanation for Statement-1
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 statements provided and determine their validity and relationship.

### Step 1: Analyze Statement 1
**Statement 1:** Manganese (atomic number 25) has a less favorable electron affinity than its neighbors on either side.

- **Explanation:** Electron affinity refers to the energy change when an electron is added to a neutral atom. Manganese has atomic number 25, and its neighbors are chromium (atomic number 24) and iron (atomic number 26). The electron affinity of manganese is indeed less favorable compared to these elements due to its stable electron configuration.

### Step 2: Analyze Statement 2
**Statement 2:** Manganese has a stable electron configuration of [Ar] 3d^5 4s^2.

- **Explanation:** The electron configuration of manganese is [Ar] 3d^5 4s^2. This configuration is particularly stable because it has a half-filled d subshell (3d^5). Half-filled and fully filled subshells are generally more stable due to symmetry and exchange energy.

### Step 3: Relationship Between Statements
- The stability of the electron configuration in manganese (as stated in Statement 2) leads to a decreased tendency to accept an additional electron, which directly supports Statement 1. Thus, the less favorable electron affinity of manganese can be attributed to its stable electron configuration.

### Conclusion
Both statements are true, and Statement 2 correctly explains Statement 1.

### Final Answer
The correct option is:
- Statement 1 is true.
- Statement 2 is true.
- Statement 2 is the correct explanation for Statement 1.