1.

Which of the following solids is not an electrical conductor ? (i) Mg_((s)) (ii) TiO_((s)) (iii) I_(2_(s)) (iv) H_2O_((s))

Answer»

(i) only 
(ii) Only 
(iii) and (iv) 
(ii), (iii) and (iv)

Solution :`Mg_((s))` is metallic solid where there are free ELECTRONS. The POSITIVE CHARGED KERNELS are present in SEA of electrons.


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