السؤال 29

Which statement gives the careful school-level rule for electrical conduction by nonmetals?

Every nonmetal is a perfect conductor.
Every nonmetal is an absolute insulator.
Graphite must therefore be a metal.
Most conduct poorly, but graphite is a familiar exception.الإجابة الصحيحة

الشرح

Poor electrical conduction is the usual nonmetal pattern, while graphite can conduct and is a familiar exception. An exception does not turn graphite into a metal, and it makes an absolute claim about all nonmetals untenable.

الشرح

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