The typical elements in periodic table are

Options

A. Na,Mg,Al
B. F,Cl,Br
C. Li,Ma,K
D. Be,Mg,Ca

Answer

**Step-by-Step Text Solution:**

1. **Understanding Typical Elements**: The term "typical elements" refers to elements that exhibit the general properties of their group or period in the periodic table. They are often used as a reference point for studying other elements.

2. **Identifying Period Three Elements**: In the periodic table, the elements in period three include Sodium (Na), Magnesium (Mg), Aluminum (Al), Silicon (Si), Phosphorus (P), Sulfur (S), Chlorine (Cl), and Argon (Ar).

3. **Characteristics of Period Three Elements**: These elements are significant because they display a range of physical and chemical properties that are representative of their respective groups. For example, Sodium is a metal, Chlorine is a non-metal, and Silicon is a metalloid.

4. **Conclusion**: Therefore, the typical elements in the periodic table are primarily those found in period three, which include Na, Mg, Al, Si, P, S, Cl, and Ar. They are called typical elements because they can be used to study the periodic properties of other elements.

**Final Answer**: The typical elements in the periodic table are Sodium (Na), Magnesium (Mg), Aluminum (Al), Silicon (Si), Phosphorus (P), Sulfur (S), Chlorine (Cl), and Argon (Ar).

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