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A non-metallic element X is a good condu...

A non-metallic element X is a good conductor of electricity in one form and is a bad conductor of electricity in another form. Comment on the thermal conductivity of both forms. Identify the element and mention the above two forms of X.

Text Solution

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Carbon occurs as graphite and diamond in a free state. Graphite is a good conductor of electricity and diamond is a bad conductor of electricity. So, the element X is carbon and the two forms ofX are graphite and diamond. Diamond is a good thermal conductor, whereas graphite is a poor thermal conductor.
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