Periodic Table and Periodicity

Question

The correct sequence which shows decreasing order of the ionic radii of the elements is

Accepted Answer

Option D. As you can see all of them are isoelectronic and for isoelectric elements which ion has more positive charge will have lesser size. And which ion has more negative charge that ion's size will be more.

More on Periodic Table and Periodicity

Periodic Table and Periodicity

More on Periodic Table and Periodicity