Question

What do you mean by effective nuclear charge and screening effect ? How do these affect the atomic properties of elements ?​

Answer 1

Answer:

Explanation:

The shielding effect explains why valence-shell electrons are more easily removed from the atom. The effect also explains atomic size. The more shielding, the further the valence shell can spread out and the bigger atoms will be. The effective nuclear charge is the net positive charge experienced by valence electrons.