Chapter - 3 Classification of Elements and Periodicity in Properties Electronegativity Ionisation and Electron Gain EnthalpiesBy Dr. Vikas JasrotiaNovember 1, 2020 Electronegativity Ionisation and Electron Gain Enthalpies Electronegativity Ionisation and Electron Gain Enthalpies: Ionization Enthalpy (∆iH): Minimum amount of energy required…