Doubt by Protap ch sen

sir why is such exception plzz explain size kyu equal hota hai..us 3d serirs mein 24 se 29

Answers

Answer by nitesh chaudhary

The ionic sizes shows gradual decrease as we move right across a series. This is because as we number of electrons increase, the nuclear charge too increase. Due to poor shielding of nuclear charge by d-electrons, the net increase in nuclear charge outweighs the effect of added electron, thereby reducing the size.