Question

how does shielding effect affect the ionization enthalpy?

Answer 1

Answer:

➡️the shielding effect affect like a Barrier effect .

➡️ as the shielding effect increases, the effective nuclear charge decreases.

..... consequently, the force of attraction by the nucleus for the valence shell electron decreases and hence the ionization enthalpy decreases.

hope it helps u

Answer 2

Answer:

If the sheilding effect increases, Ionisation enthalpy decreases.

This is because the electrons in the valence shell are sheilded by the electrons in the previous shells so the nuclear attraction on the valence electrons decreases and these electrons are loosely held, making it easier to remove an electron from the valence shell.