The fourth period of the p-block contains :

Options

A. 6 elements
B. 8 elements
C. 10 elements
D. 18 elements

Explanation

To determine how many elements are contained in the fourth period of the p-block, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of the Periodic Table**:
- The periodic table is organized into blocks: s-block, p-block, d-block, and f-block. Each block corresponds to the electron configuration of the elements.

2. **Identify the Period**:
- The fourth period of the periodic table corresponds to the row where the principal quantum number (n) is 4.

3. **Determine the p-block Elements**:
- The p-block elements start from the second period. Each period from the second onward has a maximum of 6 p-block elements because the p subshell can hold a maximum of 6 electrons.

4. **Count the Elements in the Fourth Period**:
- In the fourth period, the p-block elements are from atomic numbers 13 (Al) to 18 (Ar). This gives us:
- Al (13)
- Si (14)
- P (15)
- S (16)
- Cl (17)
- Ar (18)
- Therefore, there are 6 elements in the p-block of the fourth period.

5. **Conclusion**:
- The fourth period of the p-block contains 6 elements.

### Final Answer:
The fourth period of the p-block contains **6 elements**.

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