Column-I
(Order)
Column-II
(Correct for)
(A) $Na = K$
(P)Atomic Radius
(B) $F < Cl$
(Q) Ionization energy
(C) $N > O$
(R) Effective nuclear charge on outer shell electron
(D) $Be > B$
(S) Electronegativity

(T) Electron affinity

Question

Column-I (Order)	Column-II (Correct for)
(A) $Na = K$	(P)Atomic Radius
(B) $F < Cl$	(Q) Ionization energy
(C) $N > O$	(R) Effective nuclear charge on outer shell electron
(D) $Be > B$	(S) Electronegativity
	(T) Electron affinity

TestHub · Accepted Answer

A -> R: Na and K have approximately the same effective nuclear charge on the valence electron. B -> P,R,T: F < Cl for atomic radius, the intended effective-nuclear-charge comparison, and electron-affinity magnitude (Cl > F). C -> P,Q: N > O for atomic radius and first ionization enthalpy; N has the stable half-filled 2p³ configuration. D -> P,Q: Be > B for atomic radius and first ionization enthalpy. Hence option C.

Chemistry - PERIODIC TABLE Question with Solution | TestHub

Options:

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