Among the following the weakest force of interaction is

Options

A. Metallic bond
B. Ionic bond
C. Van der Waal's force
D. Covalent bond

Answer

To determine the weakest force of interaction among the given options (metallic, ionic, Van der Waals, and covalent interactions), we can analyze each type of bond based on their characteristics and strength.

### Step-by-Step Solution:

1. **Understanding Metallic Bonds:**
- Metallic bonds are formed between positively charged metal ions (kernels) and a sea of delocalized electrons.
- The interaction is strong due to the electrostatic attraction between the positively charged kernels and the negatively charged electrons.
- **Conclusion:** Metallic bonds are relatively strong.

2. **Understanding Ionic Bonds:**
- Ionic bonds occur between cations (positively charged ions) and anions (negatively charged ions).
- The force of attraction is due to electrostatic interactions between oppositely charged ions.
- **Conclusion:** Ionic bonds are also strong.

3. **Understanding Covalent Bonds:**
- Covalent bonds are formed when two atoms share electrons.
- The strength of covalent bonds can vary, but they are generally strong due to the shared electrons creating a stable bond.
- **Conclusion:** Covalent bonds are strong as well.

4. **Understanding Van der Waals Forces:**
- Van der Waals forces are weak intermolecular forces that include dipole-dipole interactions, dipole-induced dipole interactions, and dispersion forces.
- These forces are not chemical bonds but rather physical interactions between molecules.
- **Conclusion:** Van der Waals forces are the weakest of the interactions listed.

5. **Comparing the Forces:**
- Based on the analysis:
- Ionic bonds > Covalent bonds > Metallic bonds > Van der Waals forces
- Therefore, among the options given, Van der Waals forces are the weakest.

### Final Answer:
The weakest force of interaction among the given options is **Van der Waals forces (Option 3)**.

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