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Which of the following solids is not an electrical conductor?

(A) Mg (s) (B) TiO (s) (C) I_{2} (s) (D) H_{2}O (s)

(i) (A) only

(ii) (B) Only

(iii) (C) and (D)

(iv) (B), (C) and (D)

Answers (1)

The answer is the option (iii) (C) and (D)

In I_{2} molecules are soft and non-conductor of electricity.
Hydrogen is covalently bonded to more electronegative oxygen atom in water. Due to non-ionic nature, they do not dissociate in ions and cannot conduct electricity.

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