碘被公认为人类的“智慧元素”。下图是元素周期表中关于碘元素的信息。下列关于碘元素的说法错误的是( )

题干

A：碘元素是非金属元素

B：原子序数为53

C：原子核内质子数为53

D：相对原子质量为126.9g

上一题下一题 0.0难度选择题更新时间:2012-03-06 12:17:07

D

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