Arrange the following:
H-H, D-D and F- F in order of increasing bond dissociation enthalpy.

Explanation

To solve the problem of arranging H-H, D-D, and F-F in order of increasing bond dissociation enthalpy, we need to analyze the bond strengths of each pair:

### Step-by-Step Solution:

1. **Understand Bond Dissociation Enthalpy**:
- Bond dissociation enthalpy is the energy required to break one mole of bonds in a molecule. Higher bond dissociation enthalpy indicates a stronger bond.

2. **Analyze H-H Bond**:
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