MCQ
The elements which occupy the peaks of ionisation energy curve, are
- A$Na,\,\,K,\,\,Rb,\,Cs$
- B$Na,\,\,Mg,\,\,Cl,\,\,I$
- C$Cl,\,\,Br,\,\,I,\,F$
- ✓$He,\,\,Ne,\,\,Ar,\,\,Kr$
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