【填空题】根据价层电子对互斥理论，推断NH4＋、SO2和AsCl3空间构型依次为　　　　、　　　、　　　　。

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【填空题】根据价层电子对互斥理论，推断NH4＋、SO2和AsCl3空间构型依次为 、 、 。

【填空题】根据价层电子对互斥理论，推断NH4＋、SO2和AsCl3空间构型依次为　　　　、　　　、　　　　。