Does solid lead bromide conduct electricity?

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Study for the IGCSE Edexcel Chemistry Test. Access flashcards and multiple choice questions with hints and explanations. Get ready for your exam!

Multiple Choice

Does solid lead bromide conduct electricity?

Explanation:
Electric conduction by ions requires those ions to be free to move. Lead bromide is an ionic compound, with Pb2+ and Br− arranged in a solid crystal lattice. In the solid state the ions are locked in place, so there are no mobile charge carriers to carry a current. That’s why solid lead bromide does not conduct electricity. It would conduct if melted or dissolved, because the lattice breaks and the ions become free to move.

Electric conduction by ions requires those ions to be free to move. Lead bromide is an ionic compound, with Pb2+ and Br− arranged in a solid crystal lattice. In the solid state the ions are locked in place, so there are no mobile charge carriers to carry a current. That’s why solid lead bromide does not conduct electricity. It would conduct if melted or dissolved, because the lattice breaks and the ions become free to move.

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