Pencil lead is a non-metal but when used as an electric tester the bulb glows. Why?
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Answer:
It is property of non metal that is does allow electricity to pass from them but graphite is an exception.As pencil lead is made of graphite
Explanation:
Graphite can conduct electricity because of the delocalised (free) electrons in its structure. These arise because each carbon atom is only bonded to 3 other carbon atoms.
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Because it is a conductor it tranfer electricity
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