When is bond dissociation enthalpy equal to bond enthalpy?

Explanation

To determine when bond dissociation enthalpy is equal to bond enthalpy, we can follow these steps:

### Step 1: Understand the Definitions
- **Bond Dissociation Enthalpy (BDE)**: This is the energy required to break a specific bond in a molecule, resulting in the formation of two separate atoms or radicals.
- **Bond Enthalpy**: This is the average energy required to break all the bonds of a particular type in a molecule.

### Step 2: Identify the Conditions
- The bond dissociation enthalpy will be equal to the bond enthalpy specifically in the case of **diatomic molecules**.
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