A diatomic molecules has

Options

A. 1 degree of freedom
B. 3 degrees of freedom
C. 5 degree of freedom
D. 6 degrees of freedom

Explanation

To determine the degrees of freedom of a diatomic molecule, we can follow these steps:

### Step 1: Understand Degrees of Freedom
Degrees of freedom refer to the number of independent ways in which a molecule can move or store energy. For gas molecules, these can be translational, rotational, and vibrational.

### Step 2: Identify Translational Degrees of Freedom
For any gas molecule, the translational degrees of freedom correspond to the movement in three-dimensional space. Therefore, a diatomic molecule has:
- **Translational degrees of freedom = 3**

### Step 3: Identify Rotational Degrees of Freedom
Diatomic molecules can rotate about two axes perpendicular to the line connecting the two atoms. Thus, they have:
- **Rotational degrees of freedom = 2**

### Step 4: Calculate Total Degrees of Freedom
To find the total degrees of freedom for a diatomic molecule, we sum the translational and rotational degrees of freedom:
- **Total degrees of freedom = Translational + Rotational**
- **Total degrees of freedom = 3 + 2 = 5**

### Step 5: Conclusion
The total degrees of freedom for a diatomic molecule is **5**. Therefore, the correct answer is option C.

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