Define electron affinity

Answer 1

Electron affinity is the amount of energy released or absorbed when an atom in the gaseous state accepts an electron to form a negatively charged ion. It is a measure of an atom's tendency to attract and gain electrons. If electron affinity is positive, it means energy is released when an electron is added, indicating a favorable process. Conversely, if electron affinity is negative, it indicates that energy must be supplied for an electron to be added, suggesting an unfavorable process. Higher electron affinity values generally indicate a stronger attraction for electrons.