Question

Arrange s, p and d sub-shells of a shell in the increasing order of effective nuclear charge (Z_eff) experienced by the electron present in them.

Answer 1

The effective nuclear charge(Z_eff) is defined as the net positive charge experienced by the outermost electrons in the atom. With the increase of Azimuthal quantum number (l) the Z_eff experienced by the electron decreases .

Hence the arrangement of subshells in the increasing order of Z_eff is: d < p < s