Teaching UP TGT Mock Test Series 2025 Chemistry Classification of Elements and Periodicity in Properties
The correct sequence which shows decreasing order of the ionic radii of the elements is
1
Al3+ > Mg2+ > Na+ > F- > O2-
2
Na+ > Mg2+ > Al3+ > O2- > F-
3
Na+ > F- > Mg2+ > O2 > Al3+
4
O2- > F- > Na+ > Mg2+ > Al3+