有四种短周期元素:Z,X,Y,M.其原子序数依次增大,X元素原子的最外层

有四种短周期元素:Z,X,Y,M.其原子序数依次增大,X元素原子的最外层电子数是它的电子层数的2倍,Y元素原子的最外层电子数是XZ两元素原子最外层电子数的总和,M是地壳中含量最多的元素。下列说法不正确的是(      )

A.化合物YZ3极易溶解于水         

  BZM可以形成1:1的共价化合物,且该物质中既含极性共价键也含非极性共价键

C12g14X中含有质子的物质的量为6 mol

D.由上述四种元素组成的离子化合物受热易分解

答案

C

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