Indicate the wrong statement on the basis of the periodic table.

Options

A. The most electronegative element in the periodic table is fluorine.
B. Scandium is the first transition element and belongs to fourth period.
C. There are four transition series in the periodic table each containing 10 elements.
D. Along a period halogens have minimum negative electron gain enthalphy.

Explanation

To solve the question "Indicate the wrong statement on the basis of the periodic table," we will analyze each of the given options one by one.

### Step-by-Step Solution:

1. **Option A: "The most electronegative element in the periodic table is Fluorine."**
- Fluorine is indeed the most electronegative element in the periodic table. It has the highest tendency to attract electrons due to its small atomic size and high effective nuclear charge. Thus, this statement is **correct**.

2. **Option B: "Scandium is the first transition element and belongs to the fourth period."**
- Scandium (Sc) is the first element in the d-block of the periodic table, which is classified as transition metals. It has an atomic number of 21 and is located in the fourth period. Therefore, this statement is also **correct**.

3. **Option C: "There are four transition series in the periodic table each containing 10 elements."**
- The transition elements are indeed divided into four series: the 3d series (4th period), 4d series (5th period), 5d series (6th period), and 6d series (7th period). Each of these series contains 10 elements. Hence, this statement is **correct**.

4. **Option D: "Along a period, halogens have minimum negative electron gain enthalpy."**
- This statement is incorrect. Halogens are known for their high electronegativity and strong tendency to gain electrons, which means they have a high (more negative) electron gain enthalpy. Therefore, this statement is **wrong**.

### Conclusion:
The wrong statement is **Option D**: "Along a period, halogens have minimum negative electron gain enthalpy."

---