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    Question

    Graphite and diamonds are

    __________.
    A isomers Correct Answer Incorrect Answer
    B isotones Correct Answer Incorrect Answer
    C isotopes Correct Answer Incorrect Answer
    D allotropes Correct Answer Incorrect Answer

    Solution

    Allotropes are different structural forms of the same element in the same physical state. ┬а Graphite and Diamond are allotropes of carbon with different properties.┬а ┬а Graphite is soft and conducts electricity. ┬а Diamond is hard and an electrical insulator.

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