9. Consider the following molecules:
I. BF3 ; II. CHBr3 (C is the central atom.) ; III. Br2 ; IV. XeCl2 ; V. CO ; VI. SF4
Which of these molecules violate the octet rule?
(A) I, II, IV;
(B) I, III, IV, VI;
(C) III, V, VI;
(D) I, IV, VI;
(E) I, II, IV, VI
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