Q.
The ions O2−,F−,Na+,Mg2+and Al3+are isoelectronic.Their ionic radii show
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a
an increase from O2- to F- and then decrease from Na+ to Al3+
b
a decrease from O2- to F- and then increase from Na+ to Al3+
c
a significant increase from O2- to Al3+
d
a significant decrease from O2- to Al3+
answer is D.
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Detailed Solution
Size ∝1Z(for isoelectronic ion).O2−>F>Na+>Al3+ (Z) 8 9 11 13
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