Ncert Exercises & Solutions

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

s-orbital is spherical in shape, it shields the electrons from the nucleus more effectively than p-orbital which in turn shields more effectively than d-orbital.

Therefore, the effective nuclear charge (Z_eff) experienced by electrons present in them is d<p<s.