Answer:
Mg2+ ion is smaller than O2- ion though both are iso-electronic. The nuclear charge in Mg2+ is + 12 and O2- is + 8 so with the increase in nuclear charge the size decreases and hence O2- > Mg2+.
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Answer:
Mg2+ ion is smaller than O2- ion though both are iso-electronic. The nuclear charge in Mg2+ is + 12 and O2- is + 8 so with the increase in nuclear charge the size decreases and hence O2- > Mg2+.