Which of the following solids is not an electrical conductor?
(A) Mg (s) (B) TiO (s) (C) I2
(s) (D) H2O (s)
(i) (A) only
(ii) (B) Only
(iii) (C) and (D)
(iv) (B), (C) and (D)
Option (iii) (C) and (D) is the answer.
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