Consider the following orderings.
I. Al < Si < P < Cl
II. Be < Mg < Ca < Sr
III. I < Br < Cl < F
IV. Na+ < Mg2+ < Al3+ < Si4+
-Which of these give(s) a correct trend in ionization energy?
A) I, IV only
B) I, II only
C) I, III, IV
D) III only
E) none of them
Correct Answer:
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