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

Problem

Column-I	Column-II
(A) Increasing order of I.E.	(P) $F < O < S < Se$
(B) Increasing order of electron affinity	(Q) $O < N < F < Ne$
(C) Increasing order of atomic size	(R) $Na < Mg < Al < Si$
	(S) $O^{2-} < O^- < O < O^+$