Which of the following statements is correct

Options

A. Iron belongs to 3rd transition series of the periodic table
B. Iron belongs to f-block of the periodic table
C. Iron belongs to second transition series of the periodic table
D. Iron belongs to group VIII of the periodic table

Explanation

To determine which statement about iron is correct, we will analyze each option provided in the question step by step.

### Step-by-Step Solution:

1. **Identify Iron's Position in the Periodic Table**:
- Iron (Fe) has an atomic number of 26. It is located in the D block of the periodic table, specifically in the 3d transition series.

2. **Evaluate the First Statement**:
- The statement claims that "Iron belongs to the third transition series of the periodic table."
- The third transition series includes elements with atomic numbers 72 to 103 (like Hafnium, Rutherfordium, etc.), while Iron is in the first transition series (Scandium to Zinc).
- **Conclusion**: This statement is **incorrect**.

3. **Evaluate the Second Statement**:
- The statement claims that "Iron belongs to the F block of the periodic table."
- The F block consists of lanthanides and actinides, which are not where Iron is found. Iron is a D block element.
- **Conclusion**: This statement is **incorrect**.

4. **Evaluate the Third Statement**:
- The statement claims that "Iron belongs to the group of 8th of the periodic table."
- Iron is indeed in Group 8 of the periodic table, along with Ruthenium and Osmium.
- **Conclusion**: This statement is **correct**.

5. **Evaluate the Fourth Statement**:
- Since we have already established that Iron belongs to Group 8, this statement is confirmed as correct.
- **Conclusion**: This statement is **correct**.

### Final Answer:
The correct statement is: "Iron belongs to group 8 of the periodic table."