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Question
A non-metal X exists in two different forms Y and Z. Y is the hardest natural substance, whereas Z is a good conductor of electricity. Identify X, Y and Z.
Answer in Brief
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Solution
Carbon exist in two different forms of diamond and graphite. Diamond is the hardest natural substance, whereas graphite is a good conductor of electricity.
Hence, non-metal X is carbon, Y is diamond and Z is graphite.
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