Teaching UP TGT Mock Test Series 2025 Chemistry Classification of Elements and Periodicity in Properties Periodic Table

The correct order of increasing size for the ions F-, Na+, O2-, Al3+, Mg2+ is: 

1
O2- < F- < Al3+ < Na+ < Mg2+
2
Al3+ < Na+ < Mg2+ < F- < O2-
3
Al3+ < Mg2+ < Na+ < F- < O2-
4
Al3+ < Na+ < O2- < F- < Mg2+
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