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5) air pollution 2 - ozone and CFC'S Questions and Answers 2023
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5) air pollution 2 - ozone and CFC'S Questions and Answers 2023 What is an allotrope? Different forms of pure elements An allotrope is a form of an element that is chemically distinct from other forms of the same element. Graphite and diamond are two allotropes of carbon. What is the str...
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