题干

三硫化磷(P4S3)是黄绿色针状晶体,易燃、有毒,分子结构之一如下图所示,已知其燃烧热△H = -3677kJ/mol(磷元素被氧化为P4O10),下列有关P4S3的说法中不正确的是( )

A:分子中每个原子最外层均达到8电子稳定结构

B:P4S3中磷元素为+3价

C:热化学方程式为P4S3( s)+8O2(g)=P4O10(s )+3 SO2(g);△H=-3677kJ/mol

D:分子中存在极性键与非极性键

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答案(点此获取答案解析)

B

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