Question

what is shielding effect or screening effect? how does it affect ionization enthalpy?​

Answer 1

Hiii friend ☺☺

The more electrons shielding the outer electron shell from the nucleus, the less energy required to expel an electron from said atom. The higher the shielding effect the lower the ionization energy. It is because of the shielding effect that the ionization energy decreases from top to bottom within a group.

Answer 2

卄乇ㄚ 爪卂ㄒ乇 ♥️

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as the screening effect increases the effectiveness nuclear charge decrease . The force of attraction by the nucleus for valence shell electrons decreases and hence the ionisation enthalpy decreases.As increase in the number of electrons in the inner shells tends to decrease the ionization enthalpy.

Hope it helps u ☄️