下面的排序不正确的是(   ) A.晶体熔点的高低: B.熔点由高到低

下面的排序不正确的是(   )

A.晶体熔点的高低:

B.熔点由高到低:Na>Mg>Al

C.硬度由大到小:金刚石>碳化硅>晶体硅

D.晶格能由大到小:NaF>NaCl>NaBr>NaI

答案

B

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