Question

In a given shell, the order of screening effect is?

• A.
• B.
• C.
• D.
• E.

Answer 1

The correct option is A

For this let's discuss the screening effect.

Screening effect, also known as the shielding effect, reduces the effect of the nucleus on the outer electrons i.e. inner electrons act as a shield and reduce the electrostatic interaction between the nucleus and outermost electrons.

The correct order of orbitals in a given shell for the screening effect is $s>p>d>f$, i.e., s-orbital has the highest shielding effect whereas f-orbital has the least shielding effect.