An increase in both atomic and ionic radii with atomic number occurs in any group of the periodic ta

Question

An increase in both atomic and ionic radii with atomic number occurs in any group of the periodic table and in accordance with this, the ionic radii of Ti (IV) and Zr (IV) ions are $0.68 \AA$ and $0.74 \AA$ respectively, but for Hf (IV) ion the ionic radius is $0.75 \AA$ which is almost the same as that for Zr (IV) ion. This is due to\

Professor PC Thomas Classes · Answer

The ionic radii of Zr and Hf are almost the same This is due to lanthanide contraction\