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CHEMISTRY · Subjective · A Level · Chemistry · Periodicity and periodic trends · Periodicity and periodic trends

Problem

Column-IColumn-II
(A) F>Cl>Br>IF > Cl > Br > I(P) Ionisation energy
(B) Fe3+>Fe2+>FeFe^{3+} > Fe^{2+} > Fe(Q) Size
(C) I−>I>I+I^- > I > I^+(R) Magnitude of ΔHeg\Delta H_{eg}
(D) O>C>B>NO > C > B > N(S) Effective nuclear charge

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