Of the two elements given in each of the following cases, choose the element having a more negative electron gain enthalpy. Explain.
F and Cl

Explanation

To determine which element, Fluorine (F) or Chlorine (Cl), has a more negative electron gain enthalpy, we need to analyze the concept of electron gain enthalpy and the characteristics of these two elements.

### Step-by-Step Solution:

1. **Understanding Electron Gain Enthalpy**:
- Electron gain enthalpy refers to the energy change that occurs when an electron is added to a neutral atom in the gas phase. It is usually expressed in kilojoules per mole (kJ/mol).
- A more negative value indicates that more energy is released when the electron is added, making the process more favorable.

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