Home Preparation for National Talent Search Examination (NTSE)/ Olympiad
Chapter : 7. Periodic Classification of Element
Electron Affinity
Electron Affinity : It is the energy change when an electron is gained by a neutral gaseous atom converting it into a negatively charged ion. It is a measure of attraction or affinity of the gaseous atom for an extra electron to be added. Cl(g) + e– → Cl–(g) + E.A. Factors : It depends upon atomic size as well as electronic configuration.