试题与答案

碳的单质有_________ 、_________ 和_________ 等,其

题型:填空题

题目:

碳的单质有_________ 、_________ 和_________ 等,其中_________ 是天然存在的最硬的物质,_________ 是最软的矿物之一,金刚石和石墨性质的差异是因为______________ 。由此说明___________ 决定物质的性质。

答案:

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参考答案:A

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