Question

What is meant by screening effect of subshells​

Answer 1

The screening effect of d- electrons is less than p - electrons. In general, d and f electrons have a poor shielding effect compared to s and p electrons. This is because s and p electrons are close to the nucleus whereas d and f electrons are more diffused (away from the nucleus).

Answer 2

Answer:

Screening effect is also known as the shielding effect.

The shielding effect can be defined as a reduction in the effective nuclear charge on the electron cloud, due to a difference in the attraction forces on the electrons in the atom.