有下列离子晶体的空间结构示意图。图中●和化学式中M分别代表阳

有下列离子晶体的空间结构示意图。图中和化学式中M分别代表阳离子,图中和化学式中N分别代表阴离子,则化学式为MN2的晶体结构为

A                 B                 C                  D

答案

B

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