Point out the wrong statement
In a given period of the periodic table the s-block element has, in general, a lower value of

Options

A. Ionisation energy
B. Electronegativity
C. Atomic radius
D. Electron affinity

Answer

To solve the question "Point out the wrong statement: In a given period of the periodic table, the s-block element has, in general, a lower value of...", we need to analyze the properties of s-block elements in relation to the options provided.

### Step-by-Step Solution:

1. **Identify the Properties in Question**: The options that are typically considered when discussing the properties of elements in a periodic table include:
- Electronegativity
- Atomic Radius
- Electron Affinity

2. **Understand the Position of s-block Elements**:
- The s-block elements are located on the left side of the periodic table, which includes Groups 1 (alkali metals) and 2 (alkaline earth metals).

3. **Analyze Each Property**:
- **Electronegativity**: Generally, electronegativity increases across a period from left to right. Since s-block elements are on the left, they tend to have lower electronegativity compared to p-block elements in the same period.
- **Atomic Radius**: The atomic radius decreases across a period from left to right. S-block elements, being on the left, have a larger atomic radius compared to p-block elements in the same period.
- **Electron Affinity**: Electron affinity tends to become more negative (higher values) across a period. S-block elements generally have lower electron affinity compared to p-block elements.

4. **Determine the Wrong Statement**:
- The statement in the question suggests that s-block elements have a "lower value" of atomic radius. This is incorrect because s-block elements actually have a **higher atomic radius** compared to p-block elements in the same period.

5. **Conclusion**: The wrong statement is that s-block elements have a lower atomic radius. Therefore, the correct answer is **atomic radius**.

### Final Answer:
The wrong statement is regarding the atomic radius of s-block elements. The correct answer is **atomic radius**.