Representative elements are elements of

Options

A. s - block
B. s-block and p-block
C. d-block or transition elements
D. d-block and f-block

Answer

**Step-by-Step Solution:**

1. **Understanding the Classification of Elements:**
- The periodic table is divided into different blocks based on the electron configuration of the elements. These blocks are the s-block, p-block, d-block, and f-block.

2. **Identifying the Representative Elements:**
- Representative elements are those that are found in the s-block and p-block of the periodic table. These elements are characterized by having their outermost electrons in the s or p orbitals.

3. **Distinguishing Between Different Blocks:**
- The s-block consists of Group 1 (alkali metals) and Group 2 (alkaline earth metals).
- The p-block includes Groups 13 to 18, which contains a variety of elements including metals, nonmetals, and metalloids.

4. **Conclusion:**
- Since the representative elements are defined as the combination of both s-block and p-block elements, the correct answer to the question is that representative elements are elements of the s-block and p-block.

**Final Answer:**
Representative elements are elements of the s-block and p-block.

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