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物质的组成

> 下列有关结构和性质的说法中，正确的是（） A．酸性：HCl＞H2S，所以，非金属性：Cl＞S B．元素原子的最外层电子数越多，越容易得电子，非金属性越强 C．同周期主族元素的原子形成的简单离子电子层结构一定相同 D．原子核外各层电子数相等的元素一定是金属元素

问题：

发布时间：2024-09-10

下列有关结构和性质的说法中，正确的是（）

A．酸性：HCl＞H₂S，所以，非金属性：Cl＞S

B．元素原子的最外层电子数越多，越容易得电子，非金属性越强

C．同周期主族元素的原子形成的简单离子电子层结构一定相同

D．原子核外各层电子数相等的元素一定是金属元素

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