Q.47:- Discuss briefly the various factors on which ionization enthalpy depends.
- Atomic size. With the increase in the atomic size, the number of electron shells
increases. Therefore, the force that binds the electrons with the nucleus decreases. Thus, the ionization enthalpy decreases with increase in atomic size.
- Nuclear charge. As the magnitude of the positive charge on the nucleus of an atom increases, the attraction with the electrons also increases. Therefore, the ionization enthalpy increases with the increase in the magnitude of the nuclear charge.
- Screening or shielding effect. Greater the magnitude of the screening effect, less will be the value of ionization enthalpy or potential.