学习完“原子的构成”之后,萍萍同学形成了以下认识,其中错误

 学习完“原子的构成”之后,萍萍同学形成了以下认识,其中错误的是

A.原子由居于中心的原子核和核外电子构成   

B.多电子原子,其核外电子在离核远近不同的区域中运动

C.原子核的质量和电子的质量相差不大       

D.原子核的体积与整个原子的体积相比要小很多

答案

C

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