The amount of energy released on the addition of an electron in outermost shell of an atom is called — Periodic Table and Periodicity Chemistry Question

💡 Solution & Explanation

Step 1: Review the definitions of periodic properties. Ionization enthalpy is the energy required to remove an electron. Step 2: Hydration enthalpy is energy released when ions interact with water. Electronegativity is the relative attraction of a bonded atom for shared electrons. Step 3: Electron gain enthalpy is the change in enthalpy when an electron is added to a neutral gaseous atom. Therefore, option (d) is the correct term.