The number of element present in the fifth period is

Options

A. 18
B. 32
C. 8
D. 24

Answer

To determine the number of elements present in the fifth period of the periodic table, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of the Periodic Table**: The periodic table is organized into periods (rows) and groups (columns). Each period corresponds to the filling of electron shells.

2. **Identify the Periods**: The first period has 2 elements (H and He), the second and third periods each have 8 elements, the fourth and fifth periods each have 18 elements, and the sixth period has 32 elements.

3. **Focus on the Fifth Period**: According to the established pattern in the periodic table, the fifth period corresponds to the filling of the 4th shell (n=4) and contains 18 elements.

4. **Conclusion**: Therefore, the number of elements present in the fifth period is **18**.

### Final Answer:
The number of elements present in the fifth period is **18**.

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