Understand and calculate the energy released or absorbed during electron gain. Our free online tool helps determine electron affinity, a key concept in chemistry for predicting atomic behavior and reaction energetics. Simplify complex chemical calculations with precision.
Formula:
Formula:
ΔE = Eanion - Eatom
Where:
- ΔE is the Electron Gain Energy (the change in energy when an electron is added).
- Eanion is the total energy of the formed anion (A-) after electron gain.
- Eatom is the total energy of the neutral atom (A) before electron gain.
Note: Electron affinity (EA) is often defined as the energy released when an electron is added. Therefore, a negative ΔE indicates energy is released (exothermic process, corresponding to a positive EA value), while a positive ΔE indicates energy is absorbed (endothermic process, corresponding to a negative EA value).