Maximum intermolecular forces of attraction exists in

Options

A. bromine
B. air
C. oxygen
D. copper

Explanation

To determine where the maximum intermolecular forces of attraction exist, we can analyze the states of matter: solids, liquids, and gases. Here’s a step-by-step solution:

### Step-by-Step Solution:

1. **Understand Intermolecular Forces**:
- Intermolecular forces are the forces of attraction between molecules. They play a crucial role in determining the physical properties of substances.

2. **Identify States of Matter**:
- Matter exists in three primary states: solid, liquid, and gas. Each state has different characteristics regarding intermolecular forces.

3. **Compare Intermolecular Forces in Different States**:
- **Solids**: In solids, molecules are closely packed together, and the intermolecular forces are very strong. This results in a definite shape and volume.
- **Liquids**: In liquids, molecules are still close but can move past one another, leading to moderate intermolecular forces. Liquids have a definite volume but take the shape of their container.
- **Gases**: In gases, molecules are far apart and move freely, resulting in very weak or negligible intermolecular forces. Gases have neither a definite shape nor a definite volume.

4. **Identify the Given Options**:
- The options provided are bromine (a liquid), air (a gas), oxygen (a gas), and copper (a solid).

5. **Determine the Substance with Maximum Intermolecular Forces**:
- Among the options, copper is a solid, which has the strongest intermolecular forces compared to bromine (liquid) and air or oxygen (gases).

6. **Conclusion**:
- Therefore, the substance with the maximum intermolecular forces of attraction is **copper**.

### Final Answer:
Maximum intermolecular forces of attraction exist in **copper**.

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