Salt in its solid state is not able to conduct electricity because .

Câu hỏi :

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct  answer to each of the following questions                               

A.  it has free electrons

B.  its charged ions can flow easily 

C. it cannot create any charge ions

D. it charged ions are not free to move

* Đáp án

* Hướng dẫn giải

Đáp án : D

Cuối đoạn 2: In its solid state an ionic substance like salt cannot conduct electricity as its charged ions cannot flow.

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