下列关于物质结构、性质的说法正确的是    ( ) A.因为酸性:HCl

下列关于物质结构、性质的说法正确的是    (  )

A.因为酸性:HClH2CO3,所以非金属性:ClC

B.同一周期元素的原子,半径越小越容易失去电子

CK的原子半径比Na的原子半径大,K与水反应比Na与水反应更剧烈

D.离子化合物中可能含有共价键,共价化合物中可能含有离子键

答案

【答案】C

【解析】A项,判断非金属性强弱时,应根据最高价氧化物对应水化物酸性强弱来比较,错误;B项,同周期元素的原子,半径越小,越容易得电子,错误;D项,共价化合物中一定不含离子键,错误。

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