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05/11/2020 6:34 pm
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A non-metal ‘X’ exists in two different forms ‘Y’ and ‘Z'. ‘Y’ is hardest natural substance, whereas ‘Z’ is good conductor of electricity. Identify X, Y and Z.
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05/11/2020 6:35 pm
‘X’ is carbon ‘Y’ is diamond ‘Z’ is graphite.
‘Y’ (diamond) is hardest natural substance.
‘Z’ (graphite) is good conductor of electricity.