Electron gain enthalpy depends on:
Electron gain enthalpy depends on:
The correct option is D
(c)All the three .
In general electron gain enthalpy value becomes less negative with the increasing atomic radius because electrostatic force of attraction decreases between the electron being added and the atomic nucleus due to increase of distance between them
(a)Electron gain enthalpy α 1Atomic size
Electron gain enthalpy value of the element becomes more negative as the effective nuclear charge on the atomic nucleus increases because electrostatic force of attraction between the electron being added and the nucleus increases. As the electrostatic force of attraction increases, amount of energy released is more.
(b)Electron gain enthalpy α Effective nuclear charge (−ve value)
(c) Screening or Shielding Effect: Electron gain enthalpy value of the elements becomes less negative with the increasing shielding or screening effect. The shielding effect between the outer electrons and the nucleus increases as the number of electrons increases in the inner shells
Electron gain enthalpy α 1Shielding effect (−ve value)
(d) Therefore, it depends on all the parameters mentioned.
(c)All the three .
In general electron gain enthalpy value becomes less negative with the increasing atomic radius because electrostatic force of attraction decreases between the electron being added and the atomic nucleus due to increase of distance between them
(a)Electron gain enthalpy α 1Atomic size
Electron gain enthalpy value of the element becomes more negative as the effective nuclear charge on the atomic nucleus increases because electrostatic force of attraction between the electron being added and the nucleus increases. As the electrostatic force of attraction increases, amount of energy released is more.
(b)Electron gain enthalpy α Effective nuclear charge (−ve value)
(c) Screening or Shielding Effect: Electron gain enthalpy value of the elements becomes less negative with the increasing shielding or screening effect. The shielding effect between the outer electrons and the nucleus increases as the number of electrons increases in the inner shells
Electron gain enthalpy α 1Shielding effect (−ve value)
(d) Therefore, it depends on all the parameters mentioned.
