如图是R原子结构示意图和磷元素的相关信息,下列说法错误的是( )
A:X=8
B:磷元素的相对原子质量为15
C:两种元素可形成化学式为P2R5的化合物
D:磷可在R中的单质中剧烈燃烧
已知y=(m+1)xm2-2是反比例函数,则m=____.
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