Question

explain screening effect?how does it affect ionization enthalphy across the period

Answer 1

Hyy here is your answer ⤵️

➡️ The reduction in force of attraction by the electrons of shells present in between the nucleus and valence electrons is called screening effect.

✴️ The greater the number of intervening electrons between the valence electron and nucleus, the greater will be screening effect.

✴️ The higher the shielding effect the lower the ionization energy .

_____hope it help ✌️

Answer 2

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