First I.E. 5d elements are higher than those of 3d and 4d elements. This is due to
Channel: Doubtnut
Date: 2020-06-07

First I.E. 5d elements are higher than those of 3d and 4d elements. This is due to  ) greater effective nuclear charge action on outer valence electrons.    greater effective nuclear charge is experience because of weak shielding effect of 4-f orbitals