A metal 's ability to conduct electricity is because of ?

Options

A. The positive metal ions pass charge to each other
B. Electrons pass charges through the positive metal ions
C. The sea of electrons helps pass charges through the metal
D. conductance shown by metals is due to positive kernels and not electrons

Answer

To answer the question "A metal's ability to conduct electricity is because of?", we can break down the reasoning step by step.

### Step-by-Step Solution:

1. **Understanding Electrical Conductivity**:
- Metals are known for their ability to conduct electricity. This property is primarily due to the presence of free-moving charged particles within the metal.

2. **Electron Sea Theory**:
- According to the electron sea theory, metals consist of a lattice of positive metal ions surrounded by a 'sea' of delocalized electrons. These electrons are not bound to any specific atom and can move freely throughout the metal.

3. **Role of Free Electrons**:
- The free electrons in the 'sea' are responsible for conducting electricity. When a potential difference (voltage) is applied across the metal, these electrons can move from one end of the metal to the other, creating an electric current.

4. **Fixed Position of Metal Ions**:
- The positive metal ions (the 'kernels') are fixed in place within the lattice structure of the metal. They do not move; rather, they provide a framework for the delocalized electrons to flow.

5. **Evaluating the Options**:
- The first option states that "the positive metal ions pass charge to each other," which is incorrect because the ions are fixed and do not move.
- The second option states that "electrons pass charge through the positive metal ions," which is also incorrect since electrons do not pass through the ions; they move through the electron sea.
- The third option states that "the sea of electrons help pass charges through the metal," which aligns with the electron sea theory and is the correct answer.
- The fourth option states that "conductance shown by metal is due to positive kernels," which is incorrect because the movement of electrons is what enables conductivity.

6. **Conclusion**:
- The correct answer is that "the sea of electrons help pass charge through the metal."

### Final Answer:
The ability of a metal to conduct electricity is primarily due to the presence of a 'sea of electrons' that can move freely throughout the metal lattice.

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